Idaho Robert
We just bought a 36 Kaycraft Kampster. It was originally covered in fabric with some type of coating.
Welcome to T&TTT!

Some if not all of the orginal Kaykrafts were covered in "leatherette"... or, vinyl, naugahyde, whatever one calls it. As I recall, these early vinyls (as well as modern boat vinyl used in powerboat upholstery) had a fabric backing. Perhaps this is what you're seeing the remnants of.

Pottercounty
I would be curious to find out how it would behave in a 25 +knot cross wind...
If the teardrop in question has it's center of gravity in a reasonable position, crosswinds should prove to be little concern. Keeping your heaviest camping gear packed low should be every teardrop trailer owner's goal.
Granted, this means a design that has the cabin floor as near to the wheel's spindle height as possible. Dropping the battery mounting through the floor would aid a lower CG as well. Don't put a 60-lb A/C unit up high in the galley bulkhead... that sort of thing.
Having a fabric top on a teardrop would assist in achieving a lower CG, therefore a more stable trailer.
