Originally posted by emt137: I shamelessly pirated my backstop design off of one that another fellow here had posted. I built it for under $70 and it is rock solid and awesome. It can stop my brothers 65# compound from 10'. I just used some treated 2x6s, a rubber stall mat, lag bolts and decking screws. Couple hours work and it's good to go. I now have some carpet hanging from the back as extra insurance but nothing has ever made it that far. Hope this helps you out.Pat