Sounds good. We'll make our own Rainbow Bridge to Vahalla...
At the moment, I can't see any functionality to a square sail for any purpose. Eventually, once we're in space, we could use a square shaped mirror to supplement our food growing program. It would look like a solar sail, but would not function as one.
In the meantime, I have no objection to someone building a miniature Viking dragonboat, populating it with helmeted capuchin monkeys, and sailing it in the moat.
For a finale, we can see what the plesiosaur makes of it.
Works for me. Maybe we can even get a "pond" in there and have mini-Viking ship races...battery operated, so the oars move...then we can set them on fire...
;o]