I went to the store and just bought bolts and nuts and washers and I took an old G-Force belt loop and put the Bolt & Nut through that and clamped it down into the corners so I could weld the nuts into the framing. I put one in each corner and one in the middle of each piece of plywood. The plywood is already locked in by the surrounding supports and the snowmobiles will be held down to attachments that will go through the plywood to the frame anyways. If I can detach the plywood quickly and easily and pulled the ramp out all the way easily the frame is still light enough for me to get out and maneuver by myself. It's heavy but manageable.