I shot an English yew longbow for a few years off the hand, While I was able to achieve very good consistency and accuracy, other than the satisfaction of shooting in the traditional syle, I can't think of any advantages over a shelf that is cut close to the hand. There are definitely clear disadvantages to shooting off the hand. Consistency, freezing weather, feather burn/cuts, poison ivy, and the greater need for exactly matched arrow spine in the case if no window is cut as was the case with my English longbow. IMHO.