I am a tweener with average ball speed. I drilled it up with the pin beneath the bridge and the cg kicked out.  The pin is close to 4 in so the cg ends up pretty low.  I put a balance hole 4 in from the center of my grip on a line between the center of my grip and the cg.  I get a very smooth rolling reaction that works great on PBA patterns.  It allows me to stand right of center and play down the outside (7-9 board) on every pattern by altering the surface.  It is capable of hooking a lot if I take it to 600 grit. It does almost nothing when waxed up.  I'll wax it and take a little off with a grey scotch brite to get a nice snap on the backend.  I've also sanded it to 1200 and 2000 to get it further down the lane.  Obviously you can't do this in league, but I could use this ball on anything if allowed to adjust the surface.
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Everyone get all the breaks but me.  I earn every pin I get.