I've picked up a second hand Naish Glide 12'6", it has a nice factory decal finish but has some chipped top layer on the edges probably from being tied down on a roof rack. The layer chipped away is no more than 1mm and there is a solid layer underneath. I don't know much about the structure of these (or fiberglass in general) but should these be sealed up in a hurry? How would I do that for such small chips? They certainly aren't chunks missing and the underneath layer doesn't feel deep or rough, it feels like it could be the finish underneath the factory decal layer?

New members can't add photos so I may have time wait until I can before I get a concrete answer but appreciate any advice if anyone knows anything!

Looking at your profile it just paint chips, why bother
Its just topcoat. Under that is primer, under that filler then the glass.

If you're really worried they might leak then a dab of UV cure resin would be $20 and 5mins.

If you want it perfect go to MOzCustoms and it will look new.