After three coats of varnish I started the caulking process. Drove cotton twine into the seams then paid them wit dap 33 window glazing putty. Which is probably close to what they used originally. I used a caulk tube to extrude the putty into strips then used a mason jointer to push it into the seams. Much more satisfying then taping and using some of the new fangled caulk that is a sticky mess. But may not last as long, although nothing the caulk on the boat was window putty from 1936. Once I have payed all the seams, I’ll wait until it skins over then resume more coats of varnish. Getting closer and closer.