Also fill any voids in the flange between hull and deck. Owners have reported leaks, very mysterious in nature, that turned out to come through rub rail screw holes or localized separation of the flange.
Yes, the Ericson deck/hull is reinforced inside with roving, making the joint stronger than many era counterparts, and we have no reports in all the history of hull/deck failure (unlike other designs).
However, water can work its way through voids in the roving, or screw holes drilled through the roving. So seal the flange and screws, and thanks to the member investigators who discovered and documented this phenomenon.
View attachment 46914
Typical gap in deck/hull flange