I am currently gaming the Callaway Rogue ST LS driver. I was "fit" to the driver two years ago. I put that in quotations because I had never been fit for a driver before, and basically, the only thing I was fit for was the driver head. I previously had a 55-gram stiff flex shaft in a Taylormade M2 driver. I was swinging around 116-119 mph so that clearly wasn't the shaft for me. The guy who fit me just put me in an X-stiff shaft but didn't try different shaft options. I have never been able to h