Vintage surfboard painting/restoration

I have a 9'10" 1960's Dewey Weber that I am working on restoring. I'm reglassing about 70% of the board, so to make it look all original I need some way to paint it.
As I understand it, in a new surfboard the paint is applied under the fiberglass, but this won't work since I'm not reglassing the entire board, is there a good way to paint on top of the board? I've seen howto's suggesting spray painting it, and then applying a clear coat paint over top, but how long will that last?
Right now I'm thinking of spray painting it, then applying a clear coat of resin over top to protect the paint, or perhaps even a single layer of mesh+resin over the spray paint.
Anybody have any suggestions?
As I understand it, in a new surfboard the paint is applied under the fiberglass, but this won't work since I'm not reglassing the entire board, is there a good way to paint on top of the board? I've seen howto's suggesting spray painting it, and then applying a clear coat paint over top, but how long will that last?
Right now I'm thinking of spray painting it, then applying a clear coat of resin over top to protect the paint, or perhaps even a single layer of mesh+resin over the spray paint.
Anybody have any suggestions?