More so on the shorter clubs less so on the longer ones due to the loft.
Put your finger on the sweet spot of a wedge and see how far behind the shaft it is now do the same with a driver. Big difference.
Now with the wedge align the sweet spot up with the shaft (close the face until they are inline) and you will see the amount of "hook face" build into the club.
During impact the sweet spot aligns itself with the shaft producing the hook face.
Its that simple.
I agree that clubhead COG lines up with the shaft at low point (not at impact unless ball is at low point)... but what are the implications with alignment and ball position of having drivers with clubhead COG more rearward than ever before??
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