2200 year old mathematical theory combines with space age computer ® The Putting Arc design and CNC manufacturing to produce . Now you can feel, see and learn the Perfect Putting Stroke. Learn the 'arc type' stroke used by the vast majority of the modern day touring pros. For a 'Quick Start' and simple instructions, go to the back page. The Putting Arc works because… 1.Itisbasedonanaturalbodymovementwhichcanbequicklylearnedandrepeated.Resultscanbeseeninseveraldays ...thousandsofrepetitionsarenotrequired. 2.TheclubheadtravelsinaperfectcircleofradiusR,onaninclinedplane.Theprojection(orshadow)ofthiscircleon thegroundisacurvedlinecalledanellipse,andthisisthecurvefoundonThePuttingArc. 3.Theputterisalwaysonplane(thesweetspot/spinalpivotplane).Theintersectionofthisplanewiththegroundisa straightline,theball/targetline.(SeeIronArchie-page11) 4.Theclubfaceisalwayssquaretotheaboveplane.Itisonlysquaretotheball/targetlineatthecenterlineonThe PuttingArc.Youarelearninganinsidetosquaretoinsideputtingstroke.(SeeIronArchie-page11) 5.ThelinesonthetopofThePuttingArcshowthecorrectclubfaceanglethroughoutthestroke,includingasquare initialalignment.Thisconceptisasimportantasthearcitself,anditisapatentedfeatureofThePuttingArc. 6.Inthisperfectputtingstroke,thereisonlyonemovingpart.Thehands,armsandshouldersrotateasaunit.No manipulationofthehandsorarmsisrequiredtofollowthecorrectpathwithacorrectclubface.Ithappens automatically. 7.Thereareonly2waysfortheputtertotravelstraightbackandstraightthrough... 1)Thespinalaxisofrotationmustbehorizontal. 2)Youhavetomanipulatetheclubfaceandclubheadpathduringthestroke. Bothareunnatural,requiremanymovingparts,andaredifficulttorepeatconsistently.ThePuttingArccancurethe badhabitsyouhaveformedtryingtomaketheputtergostraightbackandstraightthroughdowntheline,andit willteachyoutheprecisionneededtobeaconsistentlygreatputter. ImportantNote:Donotattempttomovetheputterheadinacurve! Withacorrectsetup,theheeloftheputterwill perfectlytrackalongthefaceofthePuttingArc,andthiswillhappenautomaticallybecausetheputterismovingon aninclinedplane- justlikeinafullswing. INDEX 3 WhatShouldIknowaboutThePuttingArc? Facts&Testimonials 4 I’llReadTheTheoryLater–justquicklytellmehowtouseit. 5 ProvingItWorkstoYourself 6 3BasicDrills 8 Theory,QuotesandObservations 11 IronArchie–PhysicalproofthatThePuttingArcworks What should I know about The Putting Arc? Ifyouask20peoplehowtheputtershouldmovebackandthroughtheball,18wouldsay“straightbackandstraight through.”Unfortunatelythisisincorrectforthemajorityofgolfers.Inorderfortheputtertomovestraightbackand through,thegolfermustswingtheputteronaplanewhichisabsolutelyverticalorperpendiculartotheground.The spinalaxisofrotationmustbehorizontal.Mostgolferscannotdothisandtheirputtingplaneisatananglewhichlies betweenhorizontalandvertical.Therefore,theperfectputtingpathwouldnotbe“straightbackandstraightthrough.” Instead,itwouldtravelbackandthroughonanarc.ApolloniusofPerga,wholivedbetween262BCand190BC,wasthe firsttocalculatethemeasurementsofthisarc,andThePuttingArcwascreatedusinghisformulas. Foreveryfoottheputterheadmovesfromtheball,theputterheaditselfshouldmoveinsidefrom1/8to3/4ofaninch, dependingontheset-upmeasurementsofthegolfer. Thesweetspotoftheputterheadisthencapableofstayingina perfectrelationshiptothecorrectquadrantoftheball. ThePuttingArcwillenableyoutocreateapureputtingstrokeinwhichtheputterheadmovesback(andslightly upwardandinwardatthesametime)whilethefaceoftheputterstayssquaretothe“putterpath”insteadofthe“target line”. Thisenablestheproperclosureontheballandtheproperreleaseoftheputterhead. ThePuttingArcusesgeometricdimensionstomakecertaintheplayerobtainsthecorrectstrokepath,properputterface closure,andproperputterfacereleaseduringthestroke. ThePuttingArcensurestheproperstrokepathandfaceangle, whichleadstoalotof“made”putts. ThePuttingArcisbuiltfromthegolfswingandputtingconceptsofHomerKelley,MarkEvershed,BenDoyle,Mike Shannon,VJTrolio,theConicSectionformulasofApollonius,andtheappliedmathematicsofJoeyHamilton. Without theinformationthesemengavetothegameofgolf,ThePuttingArccouldneverhavebeencreated. Tour Results: ThePuttingArcisnowbeingusedbyover600touringpros.Theseproshaverecorded332worldwidewins,andwith112 winsand7majorsin2006.NoneoftheseprosarebeingpaidtouseThePuttingArc. 16ofthe242005PresidentsCupcontestantsand6ofthe12singleswinnersinthe2005SolheimCupwereknown PuttingArcusers. Thewinnersofthefollowingtournamentshadonethingincommon,ThePuttingArc:2005IndianaOpen,2006Indiana Open,2005GeorgiaWomen’sAmateur,2006MississippiWomen’sAmateur,2006TexasWomen’sAmateur,2006USGA Women’sMid-Amateur,2006USGAWomen’sSeniorAmateur,2006MississippiWomen’sSeniorAmateur. 20graduatesofthe2006PGATourQSchoolwereknownPuttingArcusers. Quotes & Testimonials: “Inastudywedidformynewbook,FixYourYipsForever,wefoundthatanoverwhelmingnumberofplayerswhohavethe yipshaveastraight-back,straight-throughstroke.Tobeattheyipsorjustimproveyourputting,trytofeelthesameflowingarc inyourstrokeasyoudoinyourfullswing.”-HankHaneyintheJanuary2007issueofGolfDigest “IreallyowealotofmysuccesstoThePuttingArc.”-KyleReifers:#1RankedAmateurintheUSA,AllAmericanand 2006NCAARunnerupatWakeForest,Mondayqualifiedandwonthe2006ChattanoogaClassicontheNationwide Tourwithafinalround61,earnedhis2007PGATourCardinhisfirsttryatQSchool “ThePuttingArchasmoregraduatesfromtheHootersTourthananythingelsearound.”-HootersTourplayer “It’sthebesttrainingaidforputtingthatIhaveeverseen.”-PGATourveteranandtwotimemajorwinner “I’veonlyuseditforashortperiodoftimeandI'vealreadymadeamilliondollarsusingit.”-PGATourMultipleWinner “Itmademeoverfivemilliondollars-that’showIknowitworks.”-PGATourMultipleWinner “ThispastyearweledalldivisionINCAAmen'sgolfteamswitha29.69puttsperroundaverage-Itisagreattrainingaidand weuseiteveryday.”-DivisionICollegeGolfCoach “Ihaven’thadachancetoplayverymuchthissummerbuthavebeenusingmyPuttingArcathome.LastweekIwonour Member/MemberTournament.Ishot73,74witha7handicapandputtedgreat,withnothreeputts.”-MichiganAmateur Golfer “JLIIIsentmeaPuttingArcawhilebackandmydaughterusesitonaregularbasis.IdobelieveitisthebestputtingtoolI haveeverseen.””-MotherofaHighSchoolGolfer 3 “Hey – I’ll read all the technical stuff tonight… just quickly tell me how I can prove to myself that The Putting Arc actually works!” UsingThePuttingArc 1.First–erasefromyourmindtheideathattheputtertravelsstraightbackandstraightthroughtowardsthetargetand thatyoumustkeeptheputterfacesquaretothetargetline(9of10golfersbelievethis.)Thisisonlytrueiftheaxisof rotationishorizontalorthegolfermanipulatestheputterwithhis/herhandsorarms.Theputtingstrokeyouwill learnwithThePuttingArcrequiresonlyapurerotationaboutapointonthespine,andhasnohandorarm manipulation.Theresultingstrokeistheinsidetosquaretoinsidestrokeusedbythevastmajorityoftheprosonthe modernPGATour. 2.PlaceThePuttingArconthegroundandtakeyourputtingstanceasifthebackoftheball wereevenwiththetop centerline.Yourshouldersshouldbesquarewiththestraight(handle)edgeofThePuttingArcandthecenterofyour spineevenwiththecenterlineofThePuttingArc. 3.SwingtheputterbackandforthwiththeheelridingonThePuttingArcandtheputterfacestayingsquaretothearcof ThePuttingArc.(Nottheball/targetline).Allowtheputtertoriseasittravelsawayfromthecenterlineineither direction,anddonottrytokeepitlow.TheputterfaceissquarewhenitislinedupwiththetoplinesonThePutting Arcateachofthefivepositions.Ifyousimplyrotateyourshouldersaboutyourspinewithnohandorarm manipulation,thiswillhappenautomatically. 4.Dotheaboveuntilyoucanrepeatitconsistentlythenturntothenextpage. 4 Proving The Putting Arc works 1.Finda6'straightandlevelputtonanindoororoutdoorputtinggreen(TheT3isdesignedforanoutdoorputting greenonly.) 2.PlaceThePuttingArc6'fromtheholesothestraighthandlesideispointing4"leftofthehole(2"foranT3,33/8" foranMSIII)Youcangetdownandsightalongthisedgeoruseastring,andbeveryaccurate.AnchortheT3model tothegreenwithtwogolftees. 3.AligntherearofthegolfballwiththecenterlineonThePuttingArcandplaceyourputterbehindtheball,sotheheel oftheputteristouchingThePuttingArc,thenmovetheballuntilitisevenwiththecenterlineonyourputter.(See backpagefordiagram) 4.Makeaputtingstrokeasyoulearnedonpage4.Ifyoudoitcorrectlyyouwillmake9outof10.Ifyoudonotmake thismany: A.Youaremanipulatingyourhands B.Youaremovingyourbodyorhead. C.Yourshouldersarenotalignedwiththeball/targetline D.ThePuttingArcisnotcorrectlyalignedleftofthehole. E.Your“spinepivotpoint”isnotcenteredonThePuttingArc. 6' 4" Deluxe 2" The Putting Arc -T3 3 3/8" MSIII “Just allow the heel of the putter to ride back and through.” 5 Three Basic Drills: AnoverviewofthethreedrillsforThePuttingArc 1.Indoorswithoutaball(acquiringvisualguidelineswhilebuildingthecorrectputtingstroke). 2.Outdoorswithaballandtarget(buildingastroke). 3.OutdoorswithaballandatargetwhileusingThePuttingArcasareference. (Practicingthecorrectputtingstroke whileusingvisualguidelinesandfeel). Drill #1 – Indoors without a ball: Theveryfirstdrillistobedoneindoors. AllyouneedforthisdrillisaputterandThePuttingArc. (IfyouhaveaT3,anchorittothecarpetwithducttape.) Stepone Findaroomsuitabletopracticeyourputtingstroke. Thereisnoballneededinthisdrill. Steptwo PlaceThePuttingArconthefloorandsetuptoanimaginaryballwithyourputter. Theheelofyour putterheadshouldbetouchingThePuttingArcataddress. Stepthree Beginthebackstrokewhilekeepingtheheeloftheputterheadagainstthearc(theheadoftheputter willmoveupasitgoesback.) Stepfour Stoptheputterheadatthecompletionofthebackstrokeandmonitortheputterface. Itshouldbeat thesameangleastherightPUTTERFACEALIGNMENTLINE(thelinesontopofThePuttingArc). Stepfive Movetheputterheadthroughtheforwardstrokeuntilthecompletionofthestoke. Atthispointlook totheleftPUTTERFACEALIGNMENTLINEtoensuretheputterfacehasmadetheproperrelease. Remembertheputterfacestayssquaretotheputterpathinsteadofthetargetline. Two Very Important Tips Concerning Drill #1: 1)Don’tuseaball.Concentrateonlyonputterfacealignment. 2)YoushouldconstantlyuseyourEYEStotraceboththemovementoftheputterheadandputterface. Drill#1 shouldbedoneverySLOWLYduringitsentirety.Thisistheonlytimeyoushouldwatchtheputterheadmove backandthroughduringthestroke. Drill #2 – Outdoors with a ball and target: Drill#2shouldbedoneonapracticegreenwithbothaballandaputter. Stepone Findastraightflat5'putt(onewhichdoesnotbreak)andalignThePuttingArcsothehandlesideis alignedtoapointapproximatelyfourinchesfromtheleftedgeofthehole. (2"foraT3-anchortheT3 with2golftees.) Steptwo Addresstheballandplacetheputterheadbehindtheball.Now,simplymovetheputterheadbackand through,maintainingcontactbetweentheHEELoftheputterandThePuttingArc.Visuallycheckthat theputterfaceisalignedwiththelinesontopofThePuttingArc.Allowtheputterheadtonaturally moveupwardduringboththebackandforwardstroke. Stepthree Placeaball onthecenterlineofyourputterface,orapproximately1-1/2"to2"fromthearcsideofThe PuttingArcwhilemakingcertainthebackoftheballrestsevenwiththecenterPUTTERFACE ALIGNMENTLINE.(seebackpagefordiagram) 6 Stepfour MakeastrokeasinStep2,keepingyourEYESontheBACKoftheball.FEELtheproperpathand alignmentoftheputterhead. Stepfive Watchyourballgointotheholeandsensethepathoftheputterduringthisperfectputtingstroke. Important Tips Concerning Drill #2: Youshouldstrokeonlytentotwentyballsinonespot. Anymorethanthiscoulddamagethegrassontheputting green. YoushouldNOTwatchtheputterheadmovebackandthrough. Thisdrillwascreatedtosendinformationto thebrainconcerningtheproperfeeloftheputtingstroke. Thisdrillwillincreaseyourconfidenceandawarenessof yourNEWANDIMPROVEDputtingstoke. Drill #3- Outdoors with a ball and a target ...no contact between putter and Putting Arc: Drill#3shouldbedoneonapracticegreenwithbothaballandaputter. Stepone Findaflat5'puttandalignThePuttingArcsothestraight(handle)sideofThePuttingArcpoints approximately41/4"to41/2"inchesleftoftheedgeofthehole.(31/4"foranT3,23/8"foranMSIII) Steptwo PlaceaballapproximatelythreeinchesinfrontofthearcofThePuttingArcwhilemakingcertainthe backoftheballrestsinfrontofthecenterPUTTERFACEALIGNMENTLINE,andtheheelofthe putteris1/4"to1/2"fromthePuttingArc. Stepthree Takeastanceandplacetheputterheadbehindtheball.Movetheputterheadbackandthroughthe ballwhilekeepingyoureyesontheball. Uponcompletionof thestrokeYOUREYESSHOULDGO DIRECTLYTOTHEPUTTERFACEANDPUTTERHEAD.Youmustmakesuretheputterfaceis alignedwiththeleftPUTTERFACEALIGNMENTLINEandtheputterheadisthesamedistancefrom ThePuttingArcasitwasataddress(rememberinthisdrillyouDONOTwanttheheeloftheputter ridingThePuttingArc.) Two Very Important Tips Concerning Drill #3: WatchTheBallYoureyesshouldremainontheballduringthebackstrokeandthroughstroke. Atthecompletionof thestrokeandaftertheballhascometorest,youshouldthenlooktoyouputterheadandputterfaceforinformation. Afteryouhavelearnedtheconceptstotheputtingstroke,alternatebetweenDrill#2andDrill#3every10putts.This willpreventyoufromunconsciouslybuildingasideforceintoyourputtingstroke. What are the basic concepts to be learned? Youarelearningaputtingstrokewithnomanipulationofthehands. Youarelearningtokeeptheputterface“square”totheputterpathinsteadofsquaretothetargetline. Youarelearningthesimplest,mostrepeatableputtingstrokewiththefewestmovingparts.Yousimplymoveyour handsbackandthrough,andallowyourarmandshoulderstorotatearoundyourspine. 7 The Putting Arc® PatNo..6,561,920BI Theory, Quotes & Observations Theory ThePuttingArcisauniqueblendoftheveryoldandtheverynew. TheexactshapeofThePuttingArcisbasedon theworkdonebythemathematicianApolloniusofPergainthesecondcenturyBC,inhisbooksonconicsections.The actualarcofThePuttingArciscalledanellipse,andApolloniusfirstcalculatedthisshapesome2200yearsago. The PuttingArcitselfisproducedonastate-of-the-artCNCrouterthatiscapableofgeneratingthearcwithanaccuracyof severalthousandthsofaninch. ThePuttingArcallowsanygolfertoquicklylearnaputtingstrokewhichhastheminimummovingparts,andrelies onapurerotarymotionaroundaspecificpointonthegolfer’sspine. Init’spurestformthisstrokeiscontrolledbya forwardandbackwardmotionofthehands,armsandshouldersinapurerotation. Nomanipulationofthehandsor putterfaceisrequiredtomakethisstroke. TheactualarcofThePuttingArcisbasedontheprojectionofaninclinedcircleonahorizontalplan. Thesizeofthe circleandtheangleoftheplaneareexactlydeterminedbyspecificphysicaldimensionsofthegolferinhis/herputting stance. Thedimensionsarethespinalpivotpoint,thehorizontaloffsetofthispointfromtheball,andthedistancefrom theheeloftheputtertothesweetspotoftheputter. ThePuttingArcisavailableinabasicsizethatwillfitawiderangeofgolfers. Withthisstandardmodel,theheelof theputtershouldbelessthan1/8"fromthecorrectarcatapoint13"fromthecenterofThePuttingArcformostgolfers. Foramoreaccuratefitting,ThePuttingArcDeluxecanbespeciallyorderedusingthegofer’scriticalmeasurementsas mentionedabove. Thisspecialunitwillbehandgroundtoveryclosetolerancesaccordingtoacomputer-generated template. AcopyofthistemplatewillalsobeshippedwiththefinishedPuttingArc. Thistemplatewilllistthegolfer’s name,date,criticaldimensionsandthearcitself,allofwhichwillbeavaluablereferencepointforfutureuse. Tovisualizeasimplifiedversionoftheactualarc(ignoringtheupwardtraveloftheputterandtheheel/sweetspot dimension),imagineaplywoodcirclewitha51"radius, (agoodaveragedistancefromthespinalpivotpointtotheball.) Now,takethiscircleoutdoorsathighnoonandholdithorizontalabovetheground. Theshadowprojectedon the groundwillbeaperfectcirclewitharadiusof51".ThiswouldbethearcofThePuttingArcifthegolferlaidonthe groundandswungtheputterhorizontally. Believeitornot,thiswouldbeaveryaccuratewaytoputt,ifthepivotpoint andballpositioncouldbereliablyrepeated. Next,holdthislargeplywoodcircleperfectlyverticaltotheground. Theshadowcreatedwouldbeastraightlinethat is102”long. Thislineisaformofanellipse,andifthisellipsewereusedforThePuttingArc,bothsideswouldbe straightandparallel. Aputtingstrokeinwhichtheaxisofrotationishorizontalwouldresultinastraight-lineputter headmovement.Thisisobviouslyaverygoodwaytoputt,sinceballpositionvariationwillhavenoeffectontheinitial directionoftheputt. ThisisprobablyonereasontheUSGAdoesnotallowputterswiththeshaft90degreestotheputter head.Itisalsoaveryhardthingforthehumanbodytodo,andyoureyeswillnotbeabovetheball,foroptimum alignment. TheaboveexamplesarethetwoextremesofThePuttingArc. Mostgolfersfallinbetweentheseextremes,withtheir puttingplane(theplywoodcircle)atanangletotheground. Theexactangleofthiscircleisdeterminedbythegolfer’s measurementsandtheresultingshadowonthegroundistheellipsementionedabove,theoneusedtomanufactureThe PuttingArc. ThePuttingArcworksforshortputters,bellyputtersandlongputtersequallywell. Forlongputters,somegolfers holdtheendagainstapartoftheirbodyandpivottheclubaroundthispoint. Inthiscasethecriticalgolfer’s measurementsarebasedontheendoftheputterandnotthespinalpivotpoint. However,ifthegolferanchorsthelong putterinhis/herchestorbellybuttonandallowsthehands,armsandshoulderstorotatewhenputting,thenthecritical measurementsarethesameasforashortputter. ThePuttingArcallowsanygolfertoquicklylearnaputtingstrokewhichhastheminimummovingparts,relyingona simple,naturalrotarymotioncenteredaroundaspecificpointonthegolfer’sspine. Nomanipulationofthehandsor putterfaceisrequiredtomakethisstroke. Thefundamentalmotionofthisstrokeisusedbymostofthereallygreat puttersonthemodernprofessionaltour. 8 Quotes & Observations “Exactly what path should the putter follow?” Theputtingstrokehaslongbeenatopicofdebateanddiscussion.Nearlyeverybookwrittenon golfinstructionhasmadeapointtodiscusstheputtingstroke.Hereareafewquotesfrom variousgolfinstructionbooks: “Some,whenputting,playtheballofftheleftfoot,othersofftherightfoot,andstillothers anywhereinbetween.Oneclassofgoodputtersstandswiththeheadovertheball.Another groupofgoodputtersdoeswellwiththeballfairlyfarawayfromthem.Someareputtingvery wellwithaputterthatisswunginpendulumfashionbetweenthelegs.Othersplayuptothe greenright-handed,thenputtleft-handed.Opposedtothisminority,therearethosewhoplay left-handeduptothegreenandputtrighthanded” TommyArmour,HowToPlayYourBestGolfAllTheTime,1953. “Yourputtershouldtrackbackandforthalongthetargetline.It’sOKifyourputterswings slightlyinsidetoalongtobackinsidethatline.Butifitswingsoutsidethatline,adjust accordingly.” HankJohnson,HowToWinTheThreeGamesOfGolf,1993. “Forotherthantheveryshortputts,thepathoftheputtingstrokeshouldbeinside-to-inside, thesameasforeveryothershot.” PeterKostis,TheInsidePathtoBetterGolf,1982. “Thestraight-back-and-throughpathisespeciallyimportantonputtsoffivefeetorless,where I’mnothittingtheballveryhard.Onlongerputts,whereI’mforcedtoturnmyshouldersmore inordertotaketheputterbackfurther,theputterheadtendstomovetotheinsidealittle. That’sfine;I’dhavetoseparatemyarmsfrommybodytoomuchtokeeptheputtermoving alongthestraight-backpath.” TigerWoods,HowIPlayGolf,2001. “Theputterbladestaysrelativelylowtotheground,andbecausethearmsandshouldersare workingtogether,thepathoftheclubnaturallyflowsfromslightlyinsidethetargetlineonthe backstroke,tosquareatimpact,andbacktoslightlyinsideonthefollow-through.Thereisno questioninmymindthatthisisthemostconsistentstrokingactionoverthelonghaul.” ButchHarmon,TheFourCornerstonesofWinningGolf,1997. 9 Thequotesonthepreviouspagearebutafewofthethousandsofquotes,tips,and philosophiesofputting.Itseemstheconfusiondoesnotlieinthephilosophy,theconfusionlies inthedetails.Howfarifanyshouldtheputtermoveinsidethetargetlineonthebackstroke? Howfarifanyshouldtheputtermoveinsidethetargetlineonthethroughstroke?Shouldthe putterfaceremainsquaretothetargetlineortheputterpath?Thesearethequestionswhich affectyourmind’sabilitytodecidehowyouwillputt. The answers to these questions lie in The Putting Arc. Thefrustrationsgolfersfeelonthegolfcoursecomefromtheirlackofknowledgeconcerning thedetailsinvolvedingolf.Suretheputterheadworksbackinsidethetargetline,buthow much?Suretheputterfaceopensandcloses,buthowmuch?Whenisaputtstraight-back-and- through?Whendoesaputter-headbegintomovetotheinsidealittle? ConsiderthequotegiventothepublicbyTigerWoodsinhisbook,HowIPlayGolf,2001. “Thestraight-back-and-throughpathisespeciallyimportantonputtsoffivefeetorless,where I’mnothittingtheballveryhard.Onlongerputts,whereI’mforcedtoturnmyshouldersmore inordertotaketheputterbackfurther,theputterheadtendstomovetotheinsidealittle.” Readingthisquotegivestheplayertwooptions: 1.LearnastrokewhichmovesalongThePuttingArc. 2.Learntwostrokes(onewhichisstraight-back-and-throughandasecondwhichmovestothe insidealittleonthewaybackandthrough) Knowingthecomplexitiesinvolvedinlearningasingle,pureputtingstrokeitwouldnotbe advisedtolearntwo.Ifthatwouldbethecase,whynotlearnfiveorsixdifferentswingsfor draws,cuts,straightshots,hooks,etc. Doestheputterevermovestraightbackandstraightthrough?Itmaybejustamatterofhow preciseyourmeasuringdeviceis.Theputtingstrokewhichappearstobestraight-back-and- throughonafour-footputtisthesameastheputtingstrokewhichappearstomoveinside- back-and-insidethroughonatwentyfootputt.Thesearenottwoseparateputtingstrokes, theyarethesameputtingstrokewhichcanbelearnedbyusingThePuttingArc. An Important Note: YourPuttingArcshouldgiveyoumanyyearsofserviceiftheheelofyourputterissmooth. BeforeusingyourPuttingArc,checkyourputterfornicksorscratchesontheheelandfileor sandthemsmoothifyoufindany. 10