So, I've been thinking about the next transition fer my boat tail project and apply what I've learned from this single wheel platform.
Build a strong frame and a lightweight body with the length the same with Dark Aero attached (about 7' long).
Have it attach to the truck at least two points.
Allow the boat tail to swing up but not down with limiters/gussets on the pivot point. Build in either some roller wheels or a durable skid plate fer the times the tail impacts the ground during dips/driveway departures.
Air shocks to keep the boat tail from cycling while traveling but allowing the boat tail to flex up during ground impacts.
Gap covers between the truck and boat tail similar to what I have now.
The boat tail will have wheels to allow fer movement/alignment when not attached to the truck.
I know that the storage weight limit (maybe half of what it is now) will be much less than with the single wheel platform but there will be less mass, mechanical components, and potential issues as well.
I won't have to worry about the boat tail being classed as a trailer since there it won't be "towed" with any wheels on the ground.
Yes, the boat tail will have all the requirements that the rear part of a vehicle has to have.