I have a 14' aluminum boat with carpeted deck and in the middle of that deck is a storage hatch. I live on a lake so it's outside at the dock most of the year I don't have a cover. The cover is just a board set to cover it and it catches on a lip and is flush to the deck. I bought flambeau zerust boxes to help fight rusting my tackle however when I open the hatch I find water in there and on my tackle boxes. What can I do to minimize or eliminate this water. Thanks