I have always had the same problem but some one told me don't be to careful,just when they get in range draw pick a spot and shoot,they will see you but if you can stay focused just shoot like they
haven't seen you and you will have time to get the shot off,staying focused is the problem I have
and just managed to do it this time.I have missed 2 already this year but this is first year I have ever got a shot off from a tree.
Pappy