IMO, any bowler with some aspiration should know his/her basic "data": the PAP, ball speed and RPM. The PAP is of considerable value bevause it is not only THE valid personal reference point for the relative core position for ball setup, but also tells a bit about the player's release type (not necessarily about the style, like Stroker or Cranker, though).
I agree absolutely with Dave - know your PAP, and know how your balls are setup relatively to it. Only with this information you can IMO judge a ball's reaction and also build an arsenal, tuning your balls' recation to actually complement each other with different reaction shapes down the lane instead of "just hook".
Knowing your PAP is also a reliable benchmark when your balls react weird, and you have no clue, why. Chances are that your PAP shifted, and with it all balls' setup. In the worst case, the drillings become so far off that the balls do not work anymore - a friend of mine had a PAP shift from 5" over +/+0 to 4" over and +/-0. Not much, one would think, but all of his equipment with a strong layout (including a LevRG with just 10 games on the clock...) flared backwards or behaved as if with a pin axis setup, very early and arcing. Just because of the PAP shift, due to a changed release.
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DizzyFugu - Reporting from Germany
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