Not sure of the size of the hole you should use, but I do know, the larger the hole, the less motion you get at the breakpoint. The smaller the hole, the more pronounced and distinct the move will be at your breakpoint.
Funny that you want to do this on an Awesome Finish. I too have an Awesome Finish which I use on dryish lanes.
However, my AF is drilled with a simple label drill,lefthanded!
I love this ball! It still does it's thing....finishes hard, it just goes extremely long before it does it. I am righthanded.
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Duct tape is like 'The Force'. It has a light side and a dark side, but it still holds the universe together.
Some days you're the bug some days you're the windshield.