ok .
a good way.. is to go to ST. ann.. # 10 .. or anywhere..find ya a 15 or so headwind... dont do put anyspin on ya ball... MAX ya power ..an listen for the thump watchin the distance show'n.. .. it will pause a sec when it lands.. dont count roll out.. that can be diff depending on green..
but where it lands will be somewhat consitant...if ya have to take notes... do this with all ya clubs.. then do it down wind..
thats just a good reference... u have then to go on.. u can do this in practice mode an take up to 10 hits per hole...IT don't count towards avg .. :)
peace...