Your ramps loom good, Rick. I am thinking about an aluminum ramp modification project this winter. I use 4 to load a mower and small tractor. My little Jacobsen tractor has spit the ramps out from under me now 3 times while backing onto the trailer. I am a slow learner. Think I am going to try tying them together underneath with a piece of pipe I can run through brackets once they are in place. I don't really have anything to tie off the cables that came with the ramps.
Reddens, I agree with Rick. I think you have set yourself up for a nice niche market where you are going to be able to show great results. It would be great if you could find a few jobs next to homes that had a couple loads of 'black dirt' dumped in the driveway or on the lawn itself as your new method is going to run circles around theirs.