RE: backyard bow ranges....
I rigged up a home made walking deer target one time with pullys and a weight. You could hold your foot on the rope till you were ready then just move your foot a little and the burlap stuffed deer would come out from behind some bushes and go for about 15 ft. man that was fun.
My brother inlaw brought some friends up to try it one weekend, we had a blast. Did loose a few arrows though.