▁this ▁program , ▁which ▁has ▁produced ▁approximately ▁ 2 2 5 ▁G olf ing ▁Machine ▁Author ized ▁Inst ruct ors ▁( A Is ) ▁around ▁the ▁world . ▁ ▁It ▁is ▁often ▁reported ▁to ▁be ▁difficult ▁to ▁understand ▁the ▁content ▁of ▁the ▁book , ▁which ▁is ▁sometimes ▁attributed ▁to ▁not ▁following ▁the ▁reading ▁instructions ▁stated ▁in ▁the ▁book . ▁As ▁it ▁is ▁a ▁book ▁primarily ▁target ed ▁at ▁expert ▁golf ▁instruct ors , ▁it ▁is ▁expected ▁that ▁regular ▁golf ers ▁would ▁consult ▁an ▁A I ▁rather ▁than ▁study ▁the ▁book . ▁There ▁are ▁several ▁instruct ors ▁that ▁are ▁recognized ▁as ▁industry ▁exper ts ▁who ▁regularly ▁appear ▁on ▁industry ▁lists ▁of ▁Top ▁ 1 0 0 ▁Inst ruct ors , ▁including ▁Martin ▁Hall , ▁Ch uck ▁Cook , ▁and ▁Ben ▁Do yle ▁just ▁to ▁name ▁a ▁few . ▁ ▁Some ▁past ▁and ▁present ▁w inners ▁on ▁the ▁P GA ▁Tour ▁showed ▁strong ▁interest ▁in ▁T GM ▁in ▁view ▁of ▁impro ving ▁their ▁game , ▁for ▁example ▁Steve ▁El k ington , ▁Bry son ▁De ch am be au ▁and ▁Mac ▁O ' Gr ady . ▁Canadian ▁Tour ▁winner ▁John ▁Er ick son ▁was ▁a ▁devoted ▁student ▁of ▁T GM ▁under ▁the ▁guidance ▁of ▁Ben ▁Do yle ▁and ▁Greg ▁Mc ▁Hat ton . ▁LP GA ▁super star ▁player ▁Ann ika ▁S ö ren st am ▁and ▁( her ▁coach ▁Pia ▁Nil sson ) ▁have ▁acknowled ged ▁the ▁influence ▁of ▁The ▁G olf ing ▁Machine ▁upon ▁her ▁excellent ▁career . ▁▁ ▁Qu otes ▁from ▁The ▁G