Nothing crazy about using your own two hands and materials left lying about.

I agree, fiberglassing will not work. but why bother? It's not going to rot
anytime soon. Finish it with a good stain and seal it with may coats of
spar varnish (if it will stick to
pressure treated). I have encapusulated pressure treated with expoy but
that could be
expensive.

The Yankess here in Connecticut say:

Use it up.
Wear it out.
Make it do,
or do without.

Good Luck