Correct: hybrid solutions could cause problems.
I share your doubts about glued seams. There are some epoxies that are
sufficiently flexible but why take a chance?
Either build her as wooden boat or as a composite (fiberglassed boat).

--
Jacques
http://www.bateau.com

"Jim Conlin" wrote in message
...
However, if the planking cannot be fully encapsulated, meaning kept DRY,
then
i'd hesitate to fill seams with something firm like splines or epoxy
putty. If
the planking gets wet and tries to expand, something has to give. It
might be
frames or fastenings.
Only if the planking is of a species that doesn't swell much, might you
get away
with this.