Mighty Hauler 1000

Anyone use a Mightyhauler 1000 to carry a motorcycle on the rear of their RV?
My gasser has a Class 3 tow hitch rated at 500 pounds tongue weight so I know I will have to upgrade the hitch to a Class 4 or Class 5. The bike I want to carry weighs about 450 pounds then the Mightyhauler weighs in at about 300 pounds.

Will also consider other options but no trailers.