Thanks for the reply. The reason I ask is this....got into a discussion with another bowler who recognizes the fact that geometry is in play, regarding how you attack the lanes, However, he refuses to believe that in some cases, on some conditions, you HAVE TO MOVE YOUR ANGLE of attack. He believes that he can attack the pocket down and in, all day long, without moving, just by changing balls.
Essentially changing the ball surface to match the conditions he sees. I said, this may very well be possible but your carry will suffer as you attempt to match up, each and every time you switch balls.
Now mind you, he steadfastly believes that he does not have to move his feet or target, once a track has been burned into the pattern......yet.....what started this conversation to begin with was.....his frustration with constantly pinging ten pins! LOL! Unbelievable to me.