Kudo's to the Judo's recommendation. Since getting back into trad archery last winter with my kids, at least one a week I take two Judo points and an empty 20 oz drink bottle. I shoot 2 arrows, throw the bottle, shoot again, walk away, turn and shoot, etc... Whether recently or 20 years ago when I trad shot alot, I have never shot from a known distance. The stump shooting, or drink bottle shooting, or leaf shooting, or insert favorite object, has always helped my shooting. One of my former pastimes was getting a buddy to roll an empty Skoal or Copenhagen can downhill for me and shoot it or at it over and over. That helped a bunch too.