Mounting a harbor freight crane in the back of the van. I've typicall seen these mounted based off the frame. Unfortunantly, the frame is nowhere I need it to be. The first pic is the inside and the crane base will be to the right of the tape measure. The next pics are the underside of the van in that corner. One suggestion that was given was made to get a piece of 1/4 alumminum plate to distribute the weight underneath. Essentially the floor would have to get ripped up for the crane to be displaced. Any other ideas?