I've shot 80% of my game sitting. When I hunt in a Treestand or a Blind it's usually from daylight until dark, and I want to be as comfy, quiet, and move as little as possible.
So I sit, and I won't stand unless something is coming to my offside and I know I have to stand up to turn around to shoot. If they are where I expect them to be I just pull my Bow back and Drill'em
Dan