Re: Leaks when it rains.
The other issue with leaks is that they are the number one destroyer of boats. The leaks allow for water to get into the core of the deck and hull (if cored). The core gives the deck strength, and just about all decks are cored, most by balsa wood. Some boats have cored hulls as well, and that can be particularly dangerous if the core on the hull gets saturated. Once the core is wet it will have to be removed and replaced with either the top or bottom layer of fiberglass replaced. A very dirty and hard job. Besides the damage to decks and hulls they can cause moisture issues spawning mold making it unhealthy to be in the cabin.
So take care of it soon! I suggest you search for Mane Sail's posts on re-bedding with butyl tape. It is not only the best method it is likely the easiest as well.