A little late to the thread here, but I really don't think the frame on these things could handle that type of load. Years ago, I looked into a swivel trailer to haul my Harley Ultra behind our class A, so I did a lot of research on them and lifts.
For those who aren't familiar with swivel wheel trailers, they aren't considered a triple tow because they don't attach like a trailer. They are basically a platform that doesn't pivot in a turn like a trailer does. Only the wheels swivel. This supposedly makes them legal to use with a toad attached, or used behind a towed trailer in all states. They're considered and extension of the main rig, not a separate trailer which also exempts them from brake rules. Of course they do count toward your gross weight because about 1/3 of the load is carried by the main rig's chassis and brakes.
Back to the frame issue. The Micro Minis are built to be light weight, which means the frame is lighter too. Our 2025 has a hitch rated for 300lbs, but I'll bet dollars to donuts the triple or double receiver needed for a swivel trailer will weigh more, and will count against your gross weight limit before ever attaching the platform. Add whatever you are carrying on the back, and you'll be running out of load capacity without loading your Micro Mini with stuff. And this doesn't even take into account the significant impact that rear load has on tongue weight.
Instead of the swivel trailer, I sold the 800lb Harley for a 600lb Kawasaki, and went with a lift. While this sounds like I'm drifting way off topic here, I'm not, because I learned very quickly on the road, the difference between static and dynamic loads. My lift was rated for 1000lbs, 400lbs more than the bike weighed, but it wasn't long before I discovered signs it was being stressed. That 600lb bike bouncing up and down on those wonderful American highways, was hammering the lift, and it's attachment points. I needed to use chains and a chain binder to reduce the stress on the lift. When you consider this was all attached to a Class A's thick frame, and 60% of the lift's capacity, I can only imagine what a several hundreds lbs of dynamic load would do to these thin trailer frames. I simply wouldn't chance it. You typically see swivel trailers on much larger rigs, which have stronger frames and higher load capacities. Wish I had a more optimistic reply.
