Getting Water in My Hull

I have a Mod 3 Capri. When I go on vacation up to Wisconsin I sail hard and keep my Capri in the water for a week. We have a blast sailing on the big waters of Green Bay and Lake Michigan.

My problem is that the boat will slowly take on water to the point where by the end of the week I may have 10 gallons when I pull it out and drain it. My drain plug is good and there are no visible cracks in the hull.

I believe that I am getting water forced up through the centerboard slot and it...

Getting Water in My Hull