I understand the desire to find a solution in a size range for which there are few choices, but these dollies and hitch rigs seem like a very bad answer.
The Bics device is essentially the same as a dolly for an A-train truck... mis-applied to quite different tugs and trailers than a legitimate A-train. As already mentioned, it's illegal in many places, as I think it should be. I'm not a qualified commercial truck driver, most of us are not, and this rig seems unlikely to pass commercial standards of performance.
The Hitch Buddy is like a C-train converter... again mis-applied to inappropriate tow vehicles. It is also not available in a size which would make any sense for a Scamp.
Any combination of this sort of hardware and the trailer will be bulky, awkward, and less safe than a trailer which is simply built to the right size and designed for tag towing (not a hitch over a truck axle). I would give up the moulded fiberglass construction long before resorting to this stuff.
Just carrying the Scamp 19' on a hitch on the back of the truck seems to have some options, all bad.
To match the hitch and coupler heights:
- extend the ball platform vertically to the Scamp coupler height - the ball mount is now a tall pole under enormous bending stress
- extend the Scamp coupler mounting vertically down to the truck ball mount height - a large structure is required on the trailer
In both cases, the front of the Scamp interferes with the back of the truck in even a moderate turn, just like a conventional fifth-wheel mounted far to close to the truck cab.
To allow turning clearance:
- extend the ball mount back - the hundreds of pounds of hitch weight is too far back from the truck axle
- extend the Scamp coupler forward in a tongue - careful structural design is required (this may be a workable alternative)
A whole bunch of structure could make a Scamp 19' into strange 22' conventional trailer with an unnecessarily elevated front bedroom (a combination of the option 2 alternatives above) but it seems pointless to me.
Lyndon, I would appreciate seeing photos of the rigs which you mentioned... although I suspect that they will best fit in Pete Dumbleton's collection of bizarre and frightening towing rigs! I would like to see a sound and practical solution, if anyone builds it.