: I'm far from a SOF expert but I doweled my stringers and used Poly
: glue (Gorilla or Pro Bond). I just figured, as long as I'm
: driving in a dowel, it takes me 2 seconds to put some glue on
: it. I used lashing as well. Those poly glues are truly
: waterproof. Once that under-carriage of the boat gets wet, I can
: stay wet for an entire summer if you use it regularly. I'm not
: sure if I trust Tightbond III for real waterproof applications.
: (where it actually stays wet)

SOF's frames don't stay wet, so it's not an issue, I'd think.

I prefer epoxy for this as you're gluing into edge grain plywood which at best isn't a reliable joint with a non-gap filling glue. Works quite well with epoxy.

Bill H.