I've seen film of Howard Hill using a long bow on a lion, at a full run, across the path of the arrow. Perfect hit.
He was as proficient as an archer can get.
His work is some interesting reading for archery buffs. Well worth your time.
From the books that I have read, there is a lot of importance in knowing every nook and cranny of your hunting territory as well as the animal that you are hunting. So scouting as much as possible, just walking the land, will give you a good idea of what's around the corner or what's on the other side of a hill. Which can be very beneficial.
Making your own maps of human and deer trails, and different types of foliage such as group of pines,...