I had a hatch cover/table/sleeping surface cut from 1/8" aluminum, the same size as my Paco Pad. I then reinforced it lengthwise by bolting on two parallel aluminum channels. I also bolted on fittings that would take screw-on steel legs made from standard pipe, so it can be removed and used as a large table. As well, I drilled a few strategically placed holes to take straps, in case it needed to be used as a back board.
Never used it as a backboard, but otherwise it works very well for me.