For the curious, below is a picture of my new-to-me Jeep tow vehicle. I may be eating lots of low-cost beans for dinner for a while; but, this should pull the trailer through the mountains just fine.
Now, the MyAway update:
The lifting roof has been bothering me because of its angle. Since I still had the lifting sides leaning against the wall, I took a picture of the tops of the folding walls, to help explain what I viewed as a problem:
As you can see, when the roof lifts, the end portion will change position from over the opening to several inches back, as it begins the natural curve radius from its hinge. This would leave about 7â€