I re-did the back deck on a V177 that was rotted out.
It was pretty easy but a little time consuming. It was screwed down at the factory with stainless screws right into the glass.
I backed all the screws out, pulled the carpet off, used the old wood as a template, cut a new one with marine plywood, drilled holes through the same spots to match back up with existing holes, installed carpet on the top side, poked a wire out the holes and marked the carpet side with tape, and screwed back down.
If re-doing the entire boat, you’d save a bunch of time by just sealing the old holes in the glass and making new ones instead of trying to line them all back up.