I have a custom coupler that will rotate in a similar fashion to a max coupler...but I need to tweak it a little. In the meantime I use a ball hitch on my extended lunette custom tow thingy (not really sure what to call it)?? Frankenhitch?
I agree with what JPNCA said, the lunette on the military trailers rotates in the housing, and will rotate even with the 2" ball hitch. I use it in this configuration most of the time, as I am Captain Fire Road so far. lol I also have the Frakencoupler to re-install as soon as I work out the washer issue (need it machined down a little for free rotation).
For now, this works out good.
For now setup
Frakencoupler
I used the Lunette for a year or so. Works good, LOUD and annoying to back up. I think they are an excellent and rugged design, and if you dont "need" to change it, dont. I needed to lengthen the tongue so I could open my rear tire swing out with the trailer attached, so using the stock lunette was not an option. I did hack the end off of one to make the Frankencoupler...so I am sort of using a stock lunette still. lol