so with the boat over on it's side I couldn't really get to anything so I went ahead and took down the mast and flipped it all the way upside down. Since no matter what I do the are where i'm gonna be applying stuff is gonna have to be sanded, i went ahead and did that. On the damaged hul while I was sanding I hit a few weak spots and one crack. The crack is pretty thin but some of the material around it it damaged as well. I have read about sticking a hacksaw into the crack and using it to cut away the damaged material, but I'm reluctant to make the thing any bigger. Also, there is alot of controversy about using epoxy vs marine tex vs polyester resin and whatnot. I think i'm pretty sure for this one I wanna actually add some chopped fiber material though. In all the posts I have read people usually talk about mixing chopped fiber with something else (like polyester resin) but when I went to west marine to look around the only thing I could find with chopped fiber material was already in some kind of liquid. Anyway, I basically want to repair it with something that will hold up structurally, but will also be waterproof (some of the fiberglass structural fillers were not waterproof). What exactly should I use for this?