I assume that's a riveted boat and it's most likely leaking from one or more of the rivets. The rivets would have to be bucked from the inside, which means removing the flooring and floatation. I had one done by an outside down around Amelia (I think it was Haynes Fiberglass--they do the aluminum too) for under $3000 about 10 years ago. Don't bother to repaint, you'll just tear it up again anyhow. You might want to put in new decking while they've got it apart. The closest really is a Lund, and you're talking high 40's with a new motor, trailer, etc.