Wow , talk about complcating a problem . Shoot from a tree in the off season and work on your form from the stand make no sight adjustments from shooting on the ground . Once you get comfortable shooting from a tree you will find that point of inpact is with in a inch of shooting from the ground at 20-30yds( the reall difference is at 5 yd are less) . The trick is you must be comfortable as if you were on the ground before you can shoot as well from a tree. Once you have this worked out suit up in cold weather closed and work out what it will take to shoot as well as in summer atire .