Forgive me if this appears twice but my reply went poof!
I went to Dragonman's years ago and there didn't seem to be much adult supervision. Just people blasting away with almost no ceasefire to check targets. I'm certainly not comparing ti to Rampart range but it was mainly people firing guns and not much interest in hitting targets.
I have 4x8 plywood sheets with some supports so they can be screwed into the plywood and rebarred into the ground. It would take a few minutes to organize that.
Steve