The aim for the exit hole means, When a deer is angled on a shot, you need to think about where you want the arrow to come out the other side.Then adjust your point of aim to pass thru the kill zone. Example: angle a 3D target away from you. You now do not want to hit the 10 ring dead center. You need to aim farther back, so your arrow will pass thru the kill zone and THE EXIT HOLE will be on the opposite sides shoulder.