<Norm> "The deck needs to be able to drop down in the back as well as rise with the terrain, either by the flex connection or slack in the chain."
Norm,
I wish to duplicate what the steel strap does. Only difference, when the wheel is lifted against the strap and runs out of slack in the top link, it compresses backward and gets an ugly bend. The chain would temporarily go slack, but wouldn't hang down far or be dangerous.
All the strap seems to do is triangulate and hold the hitch frame upright. The chain would do the same thing, I hope. The straps and the chains are the same strength in compression...near zero! /forums/images/graemlins/smile.gif
Just a thought. My BB72 weighs over 700 pounds, and is quite long back there. I bet those chains will take a pounding. I better choose strong chains and do a good welding job.