Ok, not a papoose, but the boat is my baby, so maybe I could call the cradle a papoose. It was interesting, shoving a 15′ boat cradle into a 12′ trailer and then towing the whole, really heavy mass, across the high bridge on the freeway behind a 1997 Nissan pickup truck. I think I was right at the edge of what the truck can tow. With just the trailer it towed just fine, but once I stuck the cradle in the trailer (trailer likely weighs about 1500 pounds, and the cradle would be another 1500 pounds) the combination developed a sway at 50 MPH.
Made it, have a safe place to keep the boat for the winter. Next will be pulling the boat and winterizing!