The wood slat's come out easily I use a impact driver ( the Makita drill driver set) you may snap off a few heads and have to carefully drill them out. the harder job is finding all the screws to take out the galley locker and tray but worth it That will give you the room to open up the damaged area and re build the deck.
For refinishing the ash strips I ran them thru a thickness planer and the varnished both sides to seal them
