I have a 1994 Rinker Fiesta Vee 265 and have noticed cracks in the bilge by the motor. These cracks are by the bilge pump which is the lowest place in the bilge so there is usually water there. The last couple of years the cracks have not gotten any larger. My first thought was to let the area dry when the boat is hauled in the fall and try to seal the cracks but I'm concerned with sealing moisture in. Is it better to leave the open so the area can dry out through winter months or seal them?