i once went to a 3d shoot where a guy would throw his arm to the left to watch the shot so noticeably it looked almost graceful as though he shot with a casual curiosity of what th arrow was doing even before it left the bow. that would ruin my shots, but he did quite well, and had very good groups at 20 yards. i watched him shoot a lot too, no real bad fliers, and that is with poor followthorugh. if it is consistent, it will work, but perfect form is hard to beat. there is a reason why olympic shooters have coaches.