If you are willing to spend a "few grand", why not haul this one to the front yard, go to HD for potting soil and posies. With the rest, buy a boat in better shape and you can go boating now.
I'm afraid your enthusiasm will wane after your nether regions begin to itch from fiberglass dust.
Just being brutally honest. It's possible she may float again, but it's gonna be a long, long time. Good luck.