So I figured out why the sunfish was getting so much water when I sailed. Huge cracking on underside of bow. Question, do i need to keep sanding or have I gone far enough? The very front seems to be in good enough shape. Or do I need to sand it out and remove it? And do I just put new fiberglass in, essentially sealing the top and bottom together, or do I try and keep the repaired area separate and then use 5200 to glue together?