Appreciate the idea.Had thought of that but was worried the sled would shoot the plywood to the rear of the garage
Wanted to sink anchors into the floor so the plywood would be secure,but brother-in-law didn't like that idea because he thinks drilling woud weaken and eventually crack the concrete whwn something heavy was on it.I was thinking of some kind of thick rubber that would naturally adhere to the floor but haven't seen anything that was resonably priced.some of the stuff I've seen is so pricey,it'd be cheaper to replace the concrete.Not easier,eh?