Quote Originally Posted by CavSct1983 View Post
Thinking about this, I realize the point is that, theoretically, one can make a full on kayak with a pre-possessed tarp, a knife, and natural materials. Granted.

Such a thing should definitely be attempted, if possible.

But in the interim, I think one could do this rather cheaply with 1/2-3/4" PVC pipe, or similarly lightweight and inexpensive materials (resin impregnated cardboard comes to mind as a possible material).

The key for the natural build is the materials. If one doesn't have access to good framing materials, it won't work.
Agreed. Although in my experience with tarps, even having them neatly folded and riding in your vehicle for a few months and they are bound to wear a hole in the creases. This is a great project just to be able to know how to do it. One could potentially use their tent as a kayak with the same exact materials! If one were trying to trek across a wilderness landscape or migrate across continents during the Pleistocene, this would be invaluable.