I put my boat in the water for the summer. While sitting in the water with no rain or washing the bilge pump seems to be going off more than I recall. What are the possible leak point other than the drain plug? When I installed the drain plug I did put tape on the threads, not sure if that is required or not. I have raw water wash down and fish box that you can fill up with water. Another curious question, if you put the boat in the water and bilge area is completely dry is the boat designed to take on some water in the aft are where the bilge is located?