floor construction

Thanks for the replies. Since we drop the camper fairly frequently, and won't have the tailgate, I'd rather not have a loose, portable frame in my truck bed. Believe me, I've thought about both ways and think attaching it to the camper will work best for us. I remember someone had built it onto his camper, but can't find it on search. I was thinking of just a few 2 or 2 1/2 inch crews, depending on the thickness of the plywood flooring, to hold the frame securely until the adhesive sets firmly. I don't plan on putting any screws into the camper up where the water tank is located. Anyone done this? Thanks, in advance.