Sounds like you've got a really stout lamination. Can't wait to see pics.
I too am mulling the foam or no foam question. I incorporated limber holes into each of the panels to the sides of the stringers to handle water - the original pieces didn't have a real method to address water that made it's way down there. The wings weren't formed down to the hull, they all stood a good half inch above, and the glass bridged the gap. What I noticed is that water that got down there flowed through some resin starved sections of that cloth, albeit slowly. Although few of the areas it could flow through were at the lowest point of the cell. If I foam I am going to leave the top of the foam uncapped and rely on the full channel I've created to provide a path for any water that does get there to exit through the limber holes and proceed to the bilge. Since I'm planning to trailer her all the time I'll keep her in a bow up attitude to promote drainage of anything that gets in. My bigger concern is cleaning up the passage that was made in the panel which covers the fuel tank compartment for the steering and throttle cables - they just cut a 4x6 hole in the edge of that panel. It is covered by the center console but I don't think relying on a bead of 4200 around the base of the console to prevent water on deck from making its way there instead of the cockpit drains is the best idea.
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1987 V20 Center Console - Resto in progress
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