Check out the “Texas Rollback”
Maybe I'm wrong, but it looks like that trailer would have a really heavy tongue weight since the wheels are so far back. With most of our old cars being nose heavy, I'm not sure I would like that. (But, you need more weight on the nose than the tail of the trailer or it will have a tendency to sway - just not as much as it looks like this one has!)
What I'm getting at is loading and unloading ease is nice, but towing manners and loaded weight on your truck are more important.