Well the stats are there for anyone willing to find them. Pure-ing...spine-ing was done initially to find the stiffest portion of the staff and therefore get every staff bending and twisting in the same direction as you load the staff at the top of the swing relative to the heel/toe of the head. The outcome was thought to bring a little more distance, dubious at best, but the effect of dispersion is undeniable. Now if you would pick out the "go to" club in your bag, the one you hit most consistently, able to fade or draw at command, and you mark the shaft 90 degrees to the face and that shaft will be close to the stiffest portion of the staff or the spine. And even though shafts are much more consistent than in the past there is still a "spine" in the shaft. Now if you then take one more step and FLO (flat line oscillation) and find the exact "spine" orientation of the shaft that will oscillate the tip in a flat line when the butt of the shaft is affixed, then the "spine-ing and dispersion will be magnified...that is every club in you bag reacts upon loading in the same manner. This is physics and engineering and it is science and not folk law...it does work. I do it for all the clubs I shaft, both metal and graphite and everyone I do it for for one club bring all the rest to have them done. So far everyone I have done this for has seen a 1-3 handicap improvement in their game...that's huge if you ask me.