MI does allow double towing. My towbar is the Aventa II. No ball, it is a king pin design, so fifth wheel? That aside I am looking for info on if anybody has done it and their experiences. I stopped into the local police and asked about it, they said I couldn't pull two trailers. I explained and showed a picture of the tow bar. Then I was asked a question back to clarify, "So you are pulling a Jetski with a blazer, then pulling the blazer with a trailer ball-less towbar? To which I was told, sounds like a car pulling a trailer being pulled, so that is only one trailer, he was not sure how to handle this and his response was just don't speed and don't be over 65 feet long. So I have move homework to do there.