I'm new here. I have a 1960 yellowjacket 14' vhull it like a jon boat layout with 2 bench seats. I got it last spring noticed floor was soft and had crack near side. I was told this boat had no wood all fiberglass. I sanded the crack to find 3/4" gap between2 layers of fiberglass. So i cut top layer of glass out to find it had wood between glass skins. Not just rotted but desentagrated gone. Looks like hard wood floor was laid instead of ply. My questions r what's best way and cheapest way to fix. I'm a poor man...lol