Practice as much as possible from the stand. If your shoot broadheads that are the same as your field points (I shoot Spitfires), you can always aim at a leaf with a practice arrow. I do this every hunt to make sure my sights aren' t screwy. (You can use a practice broadhead too). I always aim at the junction of the bottom and middle thirds of the deer' s body. That way if it ducks I get 2 lungs, if not, I may get 2 lungs, I may get lung and heart.