The SuperTruss requires a double receiver to get its rating. For any kind of hitch weight that requires a WDH, I would definitely use a SuperHitch and SuperTruss. For lighter weight tows, you can get away with a Class V receiver and 2.5" extension if you add side chains. If you only have a Class IV or III receiver, I would not go more than couple of feet towing anything under 3500 lbs.
Host Mammoth 11.5 on Ram 5500 HD