Oh how I love mantages. :P And to @iAmAwesomeSoShutUp if they used just duct tape how would they fly the sail or get it to stay in it's shape? That's why they have the framing.
We made a sailboat out of duct tape as well! It was our final term project. I actually think we did at least as good as those guys here haha. Total costs: like 20 bucks. Check it out: /watch?v=LK-dZOo3tBQ
Raffiniert, we say in Germany. In the Nation where even the Potus thinks the car ( Auto) was invented, at least nearly: Now boring experts invent new : The good old "Faltboot" ROFL - What will be the next surprise.
They say, "if its worth doing, its worth overdoing" but then why did they use a metal frame? Really cool but to overdo it they should try to make it out of ONLY duct tape!