I had to cut the top of the deck off under the mast step due to water infiltration and rotting core. O'Day did nothing at the deck penetrations to seal them, or at least it seemed that way on the one I owned. I found the limits of the rot, cut of the top layer, dug it out, replaced it, then re epoxied the top layer back in. Sanded it down with 80 grit. Then at the end of the season I sold it to a guy and he is having fun with it on a small lake as a party barge. A new life for an old girl but, some horses shouldn't be saved.