I usually sit while hunting, but have shot deer with help from a sling. Usually I just use it for carrying my rifle. My hands are usually full going in or out of the woods. When walking, I carry my rifle on a sling, pointed down, on the backside of my right shoulder. (I shoot lefty) That way all I have to do to pull it up is reach down and grab the forearm with my off hand, lift it up, let the sling slide off my shoulder, swing the butt up to my shoulder, wrap my off hand around the sling, aim and shoot. It takes a litte practice but you can get pretty good at it. A little trick my dad showed me.