RE: Bow Tuning Can O Worms
Generally speaking,the thumb behind the neck is a bad idea and if you are easily getting your thumb behind your neck,then there is a good chance your draw is a bit too long.Like I said generally speaking.Some have succes doing it but most will peak out with their ability before they should when using this method.
I mean using a low wrist method.You will not be able to get your wrist completely rotated perpendicular but you should rotate your wrist to move your fingers away from the grip.You should also keep the hand and fingers relaxed.Trey to find pictures of the pros.Most of them have real good hand position.Most bow web sites have pictures of their pros.At least Hoyt does.
This kind of stuff is really hard to understand over the net but you can get some starting points.
I think getting your own paper tuner can be a help but use it as a learning tool as much as anything and don't put too much emphasis on bulletholes untill you have a greater understanding of just how much the shooter can affect the reading.