RE: jumping the string
How many of you aim low then find the deer with the hole in his lungs? Reflex reaction is much faster than most of you give credit for. Think about your own reflexes. They are not measured in half seconds but milli-seconds.
As long as arrows fly slower than the speed of sound deer will have time to jump the string. Ever seen a deer jump a rifle shot? It is unheard of. (No pun intended <img src=icon_smile_big.gif border=0 align=middle>) In fact, my dad shot an elk with a 50 cal muzzle loader in the heart. That bull ran 150 yards without a heart all on reflex.