Condensation?
I have noticed that in my 1992 H28, I get condensation on the inside of the hull below the waterline. the water here in Maine is very cold and with the humidity in the cabin, I get lots of condensation at the beginning of the year. It mostly collects in the sealed storage compartments, but also comes from the aft area (where the stuffing box is located) and drains down into the bilge. The amount varies but can be as much as 1/2 gallon of water in a week. How much water do you think is coming in?