I used a tow bar with a light bar for the back of the truck.It was about a 600 mile trip in the winter we took two days and wheel that wore its holes allowing the rear wheel to go one way while we went the other it happened in front of a auto store with a tire shop so we were able to get fixed up quickly and lucky the tire did not hit anything .
That's why I wouldn't try flat towing a vehicle. I think a 3800 would fit OK on a U-haul car trailer. Seems like my 3100 had plenty of room at the rear of the trailer.
