If you know that you are only going to be shooting from a treestand, the best option is to practice shooting with your hunting rig and arrows from a treestand. That way, you can sight in your bow so that you can aim at the exact spot where you want the arrow to hit. Maybe it's just me, but too much thinking hurts my aim. I always pick out trees at various spots around my stand and find out how far they are with a laser rangefinder (I do mark them at the same height as I am so as to measure horizontal distance). That way I don't have totry to figure out the distance either. When the moment of truth comes, I only have to draw, aimand fire, unencumbered bytoo many calculations going on in my head.