One step forward, one step back...
So I found the wrong type of spray glue to use on the Depron foam. Ran out of the Elmer's spray and found an older can of mounting spray. Looked good for starters but after about 6 hours it curled the foam, top and bottom, not at all good. At least it was a smallish section made of little bits and pieces. So I went to the store and got the right type of glue and finished most of the curve sections. Now for a few weeks of leveling and sanding...
It occurred to me that I glued down aprons right where I had planned to plug in the chrono and lap counter. Oh well, we have better ideas now.
I did get to turn a few laps last night testing the aprons. About 300.