My back deck doesn't have nearby concrete nor grass available. I'm thinking more along the lines of tables, gassers--some horizontal space I do have.
I do have an SJ and like I said in my post above, have used it sometimes for resting hot stuff or for starting a chimney. Because its diameter is so small, it doesn't offer the deck enough protection for the deck when used. I have one of those round Original Grill Mats I move around here and there, and will likely buy at least one more, but overall think covering the deck with protective gear sorta misses the point of having a nice deck. As it is I have several boards I've ruined with fallen hot coal bits!
Maybe I'll move all my equipment to the garage and grill out front, in the driveway. This is the South, after all. Maybe the front yard would make more sense in that case, but I'd have to move aside the old toilet, washing machine, fridge and truck axle sitting in the yard first.
^^ Those are horrible old stereotypes in case the rest of you weren't aware.