Got some more 1"x1" square tubing and made a subframe for the plywood with 15 inch spaced supports. Pulled bed off frame to cut off the welded on angle iron. Bed now sits flat to the frame. withe the sub frame welded up, I then flipped my cabinet grade oak plywood and polyurethane it on the sides and bottom face. the bottom will get coated with some undercoat paint, before install. The subframe I made for the plywood, will get a coat of rustoleum primer, followed by their flat black paint before I screw it down to the bed frame, and then attach the plywood to it. Things are progressing well now.