If anyone is looking for it, they spell it "fibrecore."
I'm thinking it doesn't look like a
Fiberstream clone - at least from the ones I'm looking at. I say that because the
Fiberstream had pretty much straight walls, and this one has angled walls, so I believe it would not have been from the
Fiberstream molds.
They also mention that the company (Fibrecore) started in 1984 (which would be two years before Fiberstream went out of business).
Here's a photo from their website of a tandem
axle trailer:
fibercore.jpg
www.fibrecore.com
They're using a honeycombed, plastic type core, which many boatbuilders have moved to (from traditional balsa wood core). Gelcoating inside and out (I guess they are counting on the coring for insulation).
Interesting that they spell "fibre" the Canadian or British way in their name (although not elsewhere on the site).
The motorcycle trailer is cute in a teardroppish way:
I like that you're sleuthing, though, Jim