Finger pitch is different from bowler to bowler. My driller uses 3/8 forward on the ring finger, he says it helps you to hit the ball at the bottom if you want to. I think he is correct, however, I do not think that it is necessary to hit the ball at the bottom, as many bowlers do, and some quite well, I might add.
When I drill my own balls, because I prefer and use a relaxed span, I do not bother to adjust my span if I decide to add forward to my ring finger, even though I use vise lifts. Its all about what works for the individual bowler.
Also, I have found that Taylors 0 and 5/8 right for works fine for avoiding your finger holes intersecting.
Psychodad, you are correct about forward and reverse. Also, watch ND or PW release. They do not hit the ball at the bottom. In fact, their hands are generally open on the release and they roll the ball off of their fingers. Try it. If you can perfect it, you will find that you get more hook than when you you are trying to hit the ball at the bottom, and also that you will have pins flying all over the place because you get more roll on the ball. That is my theory as to why anyway. I may be wrong, but I know I am correct in that you will get as much carry as the guys ripping the cover off.
CC
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