Wormy, it could be a homemade job but you can just cut off the rotten part of the nose and re-glass.
There was a shaper suggested to you who works nearby, often surf factories and bulk hardware stores have resin and hardener. Here in Australia there is occasionally room to have somebody who is planning the sort of charity aid you are thinking of,. Don't know about Florida though?
The way you are thinking of going is how many many shapers and surf workers started!
Most factory made(by that I think you mean pop outs often have labeling to try to seem cool to uninformed buyers).
Backyarders are the most likely logo or label free!
IMPORTANT , always wear a mask if working on the foam and if you are using any power tools to cut the fiberglass and resin, use eye protection, there are minute glass fibers going everywhere, take adequate care, the substances in surfboards are not kind to human health!
I've taken up troll hunting just for fun, instead of a rifle I'll just use a pun! 冲浪爷爷