I use a pintle hitch for flat towing large vehicles. Primarily my friends shuttle bus. Pintle hitches can't overload the latch, so they are superior for loads with low tongue weight which would normally put all the load into the ball latch during hard braking.
I hard mounted my commercial pintle. The receiver-mount pintle hitches often don't have enough capacity for the larger vehicles that require them.
Also note that most trailers with a lunette ring use the SAE commercial round pin connector. The outputs are not the same as an RV-way connector. For one there is not trailer brake circuit (only battery+ for ABS and interior lights and turn and stop circuits are separate. I hard wired in a SAE round pin connector for this reason. Making a adapter won't give you full functions on the trailer but you can get close.