Cut the tray out, easiest way to fix and strengthen.
Cut the floor out, then dig all the foam out? Insatall scupper tube, reinforce, refoam and then put the holds and floor back in, fiberglass and turf and brap??!? that basically the rundown?
Fear not the path you have chosen,use the force it will guide you.
If that dosen't work try a large screwdriver and a drill with a wire brush on it lol.
i can feel the force, right on my wallet. .