Nahh--just practice with it. I don't know that it matters, but it makes sense to me...I cant my head at the same angle as my bow. If the bow is straight up and down, my neck is straight. If I have the bow canted at 45 degrees, my head is the same.

Oh ok thanks a lot guys.

the old saying goes "practice what you preach". You should practice shooting in every angle and pose that you might find yourself in, in a hunting situation.