This really deserves a rather long response. Do you have any photo's? I assume you're talking about the out side chine? And if so, plan on replacing the whole thing. Glassing with epoxy is pretty straight forward.
Proper way to do the out side of the bottom is to wrap the edge where the chine is, and the cap it with the chine. The chine is to protect the edge where the glass is wrapped, otherwise when you bump rocks, even lightly you can cause cracks where water will get in behind the glass, causing the obvious.
There is a ton of different weaves and weights of glass.
You literally cut the glass to shape, drape it over your work piece, and then use a putty spreader, and work a thin coat over the glass. And repeat layering until seen fit. 2-3 coats for the out side bottom is common. Paint brushes help for random situations, and I think I remember using a foam roller when we did our bottom.
There is a timeline as to where you can apply additional coats, after that you have to completely sand and clean the surface to remove whats called a "blush" on the surface of the dried epoxy, additional coats of epoxy wont stick to the blush and will cause problems down the road.
Our final coat of epoxy we added graphite.
We just did the inside bottom, and still have some more work to do. As just "normal" maintenance.