I have water in the hull, which is full of foam. Can't I just open some area up and let it dry, then seal it? Does the existing foam have to come out? <br /><br />Also, I cut out a section of the floor (sole) to access the bottom and stringers. To re-install the floor area, do you install a board under the existing floor layer to make a "shelf" for the new wood? Or I could build a support stringer from the hull to support the joint between old and new floor.