RE: Elevated Shooting
Arthur as usual is right on target.
But there is one thing that I haven't heard anyone list yet... and its really just useful in explaining to you Jim exactly why you are shooting high at 20 from an elevated position.
You have read the posts about everyone telling you to bend at the waist, and Arthur explained how to do that to a "T" (slight pun there). Using you shoulders to for a T, and always keeping the top of you T in a straight line.
The reason you are shooting low is because you are doing what is commonly called "dropping your bow arm". That is changing your form and your shoulders are no longer in a line.
However, the main reason you are shooting high is because in relationship to your bow, arrow and sights, your HEAD (Eye) is in a different position than it is when you shoot at a level to the target. If you are familiar with scope paralax, its acctually the same thing, only an archery version of it.
So while your eye is still behind your peep, and your pin is still centered in your peep, and your pin is on your target, the distance and angle from your eye to your peep to your sights has changed. Multiply that change times the range... and at 20 yards it can be 5-7 inches.
To help you shoot while bending at the waist, give this a try. I'm not sure how you shoot now, but I always shoot, no matter where or how, with my feet almost touching at the heels. It helps me stand up straight, and I can feel if my hips are poking out or if I'm leaning at all. Also, because treestands have a very small platform, it gets me used to shooting that way. I can't shoot from a Derek Jeter position 20 feet up, so I don't try it when I'm on the ground either. Try putting your heels together then bending at the waist... think back to kindergarden and having to sing "I'm a Little Teapot..." The whole tip me over and pour me out thing.... it has some real world application. Childish and silly yes.... but you'll thank Mother Goose when you smoke that deer at 20 yards instead of shooting right over its back.