Bass boat repair help
I have a 1988 Astro Procaft bass boat that I have been working on. I noticed the pedestal seat in the back had a lot of flex in the base when the boat encounters waves and someone is sitting on it. I decided I would take the plate off and try to fix it. After removing the plate I can now see the problem. A layer of wood under the fiberglass has rotted and is no longer supporting the fiberglass causing the fiberglass to easily flex when force is applied. Please help me brainstorm solutions.
I have purchased a 1/4inch aluminum plate, that I cut to the size of the the raised surface. I was planning to use this to reinforce the area, but now that I see the problem, I am uncertain.
The pictures are after I cleaned out the rotted wood that I could easily reach.