My cousin installed a 2" receiver on the back of his toy hauler, and installed a tilt-a-rack for one of his motorcycles. It also helps to take some weight off his overloaded hitch.
As long as your toys are not taking to much weight off the hitch, you will be fine. Make sure that the hitch and mounts are up to the stress. Consider that you will be taking 300 - 500 pounds and placing it about 18" behind the frame mounts, and then pushing down hard. It is like taking a torque wrench and pushing down with 750 foot pounds of pressure. Thick steel can take this stress, while connecting to hallow tubing will not.
http://www.discountramps.com/tilt-a-rack-carriers/c/BRAND-TAR/Good luck,
Fred.