Grit dog wrote:
This thing isn’t tire scrub like a tandem trailer. The pivot point is the rear axle of the truck. In a tight turn, it will partly drag the wheels sideways. Under an unknown load.
This looks like something I’d fab up to redneck a heavy load a short distance.
The pivot point isn't the rear axle (unless you have 90 degrees of front wheel cut). Most full size pickups have a turning radius of ~50', so if the tag is 6' behind the rear axle your scrub angle is about 16 degrees. Not great, but isn't going to kill the tires unless you do circles all day long.
Lots of speculation about something that no one posting yet has seen or used. It would be more informative to hear from someone who has used one. I haven't, it doesn't look like the best solution for most people but might be pretty good for some.