I would think that it's a stretch with the Rhino on your boat, especially is tongue weight is an issue. I think a Suzuki Samurai would be the way to go, plus they are thousands cheaper.
Get one with no top, take off the doors, remove the back seat, weld on a hitch, drop it in 4low and you're good to go. It would probably fit in the moho and be just at the right weight.