Soft spot projects have a tendency to grow. These are pictures from a spot spot project last winter in my cockpit sole. The plan was to cut out plywood core around pedestal and replace it with solid glass. The boat was indoors in a heated space and had about 2 months to dry out. After cutting out suspect area we checked surrounding area with a moisture meter and found water had migrated. Ended up replacing entire cockpit sole. Plywood in aft area, solid glass in are where rudder posts and pedestal penetrated the sole and balsa in forward area of the cockpit. I ended up having it done professionally although I would have done it myself if I had the time. Cost around $2700
Things we found out. Once water saturates a core there is no good way to completely dry it out in place. Areas where there are deck penetrations should be solid glass. I probably never have to worry about this area again.