Check this out.. I'm not a driller but learning about ball dynamics.. this is my theory.. as most of the weight hole tequniques I see are wrong in my opinion..ie .. the inside pap , on pap, past pap.. for most part they may work .. but the PAP has nothing to do with what the weight hole is doing..
it is distance from the pin that changes how the hole influences the ball dynamics..Ie taking weight out of the top of the core vs side of the core.. I am almost positive of this.. only thing I don't have a grasp on yet is how what side of the core changes what the weight hole does..
anyway.. for more pop.. my theory.. you get bigger/quicker/ sharper backend from putting the pin near the VAL.. now it isn't actually putting the pin near the VAL that makes this reaction.. it is the fact that putting the pin near the val allows the fingers and thumb hole to be taking the "averaged" amount of weight out of the side of the core (6 3/4 from the pin) This does two thing.. increase the rg which allows the ball to get down the lane.. and also raises the RG differetial which increases flare.. I don't know about this either.. but you would think increased flare would make the ball want to start up early.. anyway.. one of those two things or a combination of the two makes the ball get down the lane and then have a bigger backend..
so a weight hole that is 6 3/4 from the pin is the first step.. and I would think somewhere close to the thumb or in the Thumb quadrant. Depending where the thumb in in relation to the pin you could also go deeper with the thumb hole..
Keep in mind that you need to keep the ball legal.
What is the pin to pap of the ball??
check out this article by ebonite.. I think this is the best explanation and summary of weight holes I have read..
http://ebonite.com/resources/bowling_tip_detail/balance_holes--------------------
16-17 mph,350 rpm,PAP 5 1/2 x 3/8up, HighGame 300 x 3, High Series 782
Book Average 215 / 205,PBA Xperience ave180
Edited on 2/26/2009 5:25 PM