Let's think about the physics of a downward shot and a deer's chest. Depending on the height of your stand and horizontal distance from the deer you actually need to hit high. If you try to hit the same exact spot that you would if you were shooting at the deer from the ground you probably won't get the offside lung. The deer is three dimensional so you need to aim considering the exit hole as much as the entrance. Thats a lot of words that mean hitting high on a steep angle shot is a good thing. To get the visual on this hold an arrow on the front of a 3-D deer target. Visualize where the arrow has to enter to exit after going through both lungs. I shot a buck last year about four inches from the spine and the exit was just above the white hair on the offside. That deer was 32 yds from my tree but about 30 ft below me. Entering that deer only half way up the body would have exited at the sternum and would have only resulted in a single lung hit. Not good. This same theory applies to quartering to and quartering away shots. Keep the exit in mind.