One, putting your thumb behind your neck is a big no no. If you can do this your draw length is too long, or your release is too long, or both. That is one of the first form problems you should look for when looking at someones set up.
Hmmm...that is really nice to know. I have been doing this ever since I started shooting and I am pretty darn accurate. I think that my draw must be too long then.[&o]
I guess I will live with this thru the season. No sense inchanging now, right?