We extend to you a cordial "WELCOME ABOARD !" Come on in, make yourself at home, we are a friendly group of enthusiasts, and we also appreciate the classic Chris Craft Roamer, Corsair, and Lancer boats too , as they are all on the same family tree and share much in common ! Just start by posting a note introducing yourself to the group, that's all it takes here (we don't ask for or retain any personal information here, because our intention is to just "have fun and share information".
Paul said: "At first I was thinking only of bolts going through everything and no glue. That would at least allow disassembly some day."
If these don't work out (but I think they will work fine), I doubt if you would disassemble it. I bet you would be making new pieces out of wood with the grain running at just a bit different orientation, or perhaps out of laminated material.
About over-building: Absolutely nothing wrong with that! My whole career was designing for the hydropower industry where we normally were only building one (or at most a few dozen) of any design. With one-off designs you can't afford to spend great amounts of time optimizing the design to the N-th degree like they do in the manufacturing industries where they may be making hundreds of thousands of pieces. Thus mild over-designs are simply good business (a little extra weight and extra materials is more economical and expeditious than extra months or years of additional design and prototype testing). And if we did have a failure, we could usually zero right in on a design flaw and beef it up a little just like you are doing on your stringers.
I bet you can hardly wait to get out of the bottom of that boat and start dropping the drive train back in!
Best wishes, Curt...
1967 fiberglass 38' Chris Craft Commander Sportfisher with twin 427 CID 300 HP engines.