Ok, I know it's been a long time since the ruling came out about fat ultralights and the grace period. So, if someone has a fat ultralight that isn't registered, it's basically a lawn ornament, right. But a legal ultralight, unregistered, built from a kit or whatever is just that, an ultralight, no paper work required, yada, yada, yada, ect. And I don't suppose it could ever be moved up to LSA unless the builder provided all the documentation as proof. Of course I could be wrong, I was almost wrong once before.
Bob