Thanks,,,,,,,,,,,,We are located in the CA Delta area at Owl Harbor, Isleton, CA. The first night we spent on the boat it rained 1 1/4" and the temperature was around 45 degrees. It was dripping everywhere. I'll sure try the ventilation strategy and pick a a de-humidifier as well. I'm also still considering covering the bare fiberglass in the berth, any suggestions on what would be an appropriate covering???