I have had a slight leak over the last 2 years that I could never find. Over the weekend while I had the boat in a slip, I found the ever so slight trickle, but I am not sure on the next step. The leak is coming from a little vent at the back of the boat by the rubber exhaust hoses. The little vent is on the side of the bilge, I covered the vent with duct tape and leaked stopped, but after five or six hours in the slip I noticed that the carpet above and to the right of the vent was soaked. Question 1 What is that vent? Question 2 Why would there be water leaking out of it?