additional trailer towing behind 5th wheel

[jwbups]

I was on my way back to our campground when i spotted a large 5th wheel pulling a small enclosed trailer with the 5th wheel. I went back and had a talk with the owner. He has a dodge duelly pulling a 37 foot 5th wheel and a 10-12 foot enclosed trailer with the 5th wheel.. I asked if he had problems with any law enforcement people and he said no , for in Michigan he is legal. He stated that as long as legal in your own state then you can pull it in most any state without problems. He had a special home made hitch for his trailer and he had been thru most states in the country with the combination. Has anyone installed a hitch on a MS or ES trailer ? I would like to have a golf cart to use in our park, but have no way now to transport it.