My father-in-law made me some superb primitive self-nock arrows with hand forged steel trade points using sinew, hide glue, etc. My goal is to hunt with them using the black locust Cherokee D bow I made, so I need to figure out how to conduct at least a limited amount of practice with them for proficiency. I am afraid my usual hay bale or styrofoam backstop will destroy them with the sudden deceleration. Any suggestions what to use, or how to go about it?