uhh, I wouldn't try.

the wings would fall out due to gravity.

And like I said before, thats putting force on the wings in the opposite direction for which is was intended. I see what you're getting at though, and it would be interesting to see, but I'm not volunteering my boat or set of wings to try it.

FYI, one of the wing tubes on my 17 has bent from me leaning on it during a tack. The stuff isn't very structurally sound imo.