dont be afraid to put weak layouts on your pro,pure,tour...tactics that you have, like 4 1/2 - 5 1/2 should be good. these balls have pretty strong cores and cover. in my opinion you put the mass bias in a too strong position something around 60 degrees should be good fine, not too strong but not too weak, i have mine drilled 60x5"x60 and it has a great backend even for a sanded ball. well this is just my opinion, but i hope this can help you a little!
o.o
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Mathieu Beaudoin
JR team canada member 2008-2009