A tall sail on a sail boat is empty until the force of the wind fills it (measured in foot pounds maybe...)
(narrow) Sail boats turn over
and their heavy Keel puts much of their weight below the surface of the water...
It's pretty obvious that I don't think much of these rigs for hauling truck campers in the wind... or on roads that have high crowns.
Just because a couple of people that defend them haven't turned them over doesn't mean they can't.
It appears that very few people want to haul their truck campers with them.
It appears that there is a lot of effort to ignore high school physics... and I'm sure that everyone had that class as a requirement.
