What about flex Gord? Would the L or A flex be enough? I understand that a proper golf swing can generate a lot of load, but I don't know if height is the ultimate predictor of top end speed (otherwise a 7' golfer would need like XXXXX stiff shafts).

Assuming that Zac has a decent swing (or will have one soon), what should he be looking for in shafts (assuming a regular swing speed for someone 5'6")?