Looks similar, but not so high-end looking. I don't think that the wheels were fully fendered; more inset.
Here's a bare bones Bushtec.I think that you are right. It was probably a Bushtec. The one I saw was pretty plain-jane.
In case your interested in a used trailer, there is a guy up your way selling an ST and trailer. The add says he will split them up.I saw a motorcycle trailer being towed behind a GL the other day. Did not see the brandname. It had larger diameter wheels with what looked like narrower motorcycle tires on it. Can anyone point me to the manufacturer?
Can't attest to the small wheel trailers, never towed one......
I'm wondering if these Bushtec trailers tend to be a bit more stable to tow then some that have smaller, wider wheels. I've followed a couple that are more standard automotive wheeled, and they seem to oscilate at slab speeds.