Here is a excellent hitch that you could use. I saw it first hand at cruiser moab and was really impressed. A little pricey but it would be well worth it.
www.adventuretrailers.com
Couplers and Pins
SAFETY: This is a heavy duty product. These hitch and couplers are designed and manufactured by a blacksmithing family who trace their skills back five generations. All units conform to the requirements of SAE standard J684 and are tested by independent labs.
360° ROTATION & THREE AXIS OF MOVEMENT: This eliminates twisting damage to vehicle & trailer frames caused by sudden changes in vehicle-trailer orientation while off roading.
POSITIVELY SECURED CONNECTION: Once the latch plates are locked in place Lock N' Roll® will never pop off like ball hitches do. Everything is in plain view to eliminate any question of whether or not the trailer is hitched correctly. The positively secured connection keeps you in control so minor mishaps on the road don't turn into major accidents.
EASY TO USE Lock N' Rolls® wider range of movement makes it easy to couple and uncouple.
DRIVING COMFORT: Lock N' Roll® provides a very tight, close fitting connection that eliminates "thunk & jerk" action of conventional hitches. Nearly any terrain can be negotiated safely making this hitch ideal for off road. The 360 degrees rotation along with the left to right and up and down articulation allows fantastic maneuverability especially when backing a trailer into position.
Adjustable Height Drop/Rise Bar Hitch, 6000 lb Gross Trailer Weight: This hitch bolts into the 1" dia. hole that had been used for a ball mounted on the standard 2-1/2 wide drop/rise bar that slides into a standard 2" square receiver tube. It can bolt on from either side but must be used with the slots facing up. Drop/Rise bar is not included. 6 lbs.
2" square slide in coupler, 6000 lbs gross trailer weight
This is for trailers with a tongue constructed of 2" ID tubing.( The same as a receiver tube.) P/N 212 slides into the trailer tongue and is bolted in place for easy removal. 9 lb
Cost: $180.00