My view on the need to use a generic PAP today....in the case that the bowler is going from conventional to fingertip my suggestion would be due to the cores being stronger today, than years ago when the drill sheets showed the pins next to the ring fingers. I would go with the pin below the ring finger to possibly eliminate potential for over flaring. Now a day, with the core, pin next to ring finger can be anywhere from 4 1/2" (which is safe) to 2" if they are a lower track or spinner. Just looking at it differently due to core strength.
Here's a great scam by a pro shop operator that is no longer in business...surprisingly....if you were a new bowler, he would talk you into a higher performance bowling ball and drill conventional. He would place the pin, cg & mass bias all in line between the fingers. His recommendation would be throw the ball for a month get a track then bring the ball back, redrill finger tip and relay it out. And charge another whopping $50+ to redrill it! It was amazing how many bowlers he scammed into this.....and surprisingly he is no longer in business
The views and opinions expressed by myself are solely those of mine and NO one else, nor are they affiliated with anyone else.