I found the leaks on the from fittings where the bridle (foil) attahces. Makes sense. Everytime you bury a bow at speed. there is pressure that just forces the water in. There was another under the lip inside the daggerboard well. Same thing. Easy fix.
Don
Using a similar method for pressurizing the hull, I found leaks around the rivets that hold the 4-way jib track to the hull.
I also pressurize my mast (through the holes that the rotator mounts through) and check for leaks each spring.