Had to look up and see what a Mighty Hauler was... I'm not sure exactly what your motorhome is, but if the frame is strong enough and you have at least 2,000 pounds of reserve capacity on your rear axle it might work. With the amount of tailswing you'd have, strange things might happen with your toad on tight turns.
2017 VW Golf Alltrack
2000 Ford F250 7.3