I just hand roll it, wiping the sand off as I go, and stand it against the basement wall. Then stick my water filter tote or something else in front of it so it stays there. Or if I'm lazy, I'll just lay it on the floor and put the tote on top of it. Won't hurt it.
But, if you really want to be a contortionist, try hanging it in the front compartment from the hook in there. That will get you some creative expletives when a coil slips off and around your neck. Sorta like playing Tarzan with a giant snake. Ungawa!