I'm looking at getting the 915 D2 driver this spring but just don't feel comfortable at a 45" shaft. I feel like I'm compensating for the shorter shaft and feel much more comfortable over a 45.5" inch shaft. I know I'll likely lose some accuracy but I'm curious to know how much more clubhead speed, ball speed or overall distance I might gain with that extra 1/2 inch. Is there even a way of knowing? Would sacrificing some accuracy for some distance be worth it? My current numbers with the 915 are 100-105 clubhead speed, 150-155 ball speed and distance I can't remember exactly.