I have a teammate that rolls the ball a foot before the foul line.  Speed about 14-15 RH around 4 pap revs I can't tell due to where the ball is released.  I would guess though around 300-350.  Very smooth bowler but due to his technique can't consistantly carry a ten pin.   He currently use a hammer 2001 drilled pin about 1 inch above the right ring averaging 199 throwing straight up 7-10 board . As anyone drilled a ball for someone similar?  I'm guess in he need to save more energy on the backend.

Thanks

George