Rondo,
Here are the pics of the Bro-in-Law's bike and cart set-up. These were taken when he was putting it together. The vice grips are just holding the flat bar stock together for welding. He's used it now for 2 seasons and it works great. As you can see it is really nothing more than a hitch mounted on the rear of the bike. Sorry it took so long for the pics, but he just sent them to me.
Craig