Thx Paul G., actually I meant a stack of planks, not plans (perfectly sober?).
It's interesting how obnoxiously disquieting the solving glue idea is, in spite of the technical possibilities you brought.
It could not go without chine stringers and screws anyway. The only prize to win, I'm afraid, would be to be able to take a big boat apart once a year in winter.
Plan B is to replace the cement by "rubber", or like, joints. Some are said to stand heavy pressing without creasing. I'll try to look that up.
I wonder what folding bass-boats like Porta Boat, German Banana boats, and that Swiss or Austrian brand Hawa, rely on to achieve waterproofness.
Seahopper (G-B, not the Japanese yard) recourse to peeveessee hinges and ply panels.
Those threefold dismantling kayaks are another way. Bolger built a folding schooner that tore apart twice while sailing on trials.
Such a kayak would need low bow and stern, and about the late Mae West's prismatic coefficient, to keep the stringers straight or smoothly curved.
Those stringers could be made of aluminium or ash.
Polyester panels would be heavy I guess, though if thin they would make a round fore-deck panel.
You're right about Nautiraid home-made imitations, etc., but they're a bit long to build and I'm on a folding sail (porn word! Rub this!)-boat now, stranded in town.

Now sink me.
Rohr Eins Bereit!