This sail plus a rain coat make for a small tent. I spent four whole days in it, reading the same book over and over again. At last, the grass was so deeply swamped, that I packed everthing in the watertight bags. I put on my drysuit and prepared to leave in streaming rain, when, from one minute to the other, it stopped raining. The water stood right at the tent's edge... Just if you want to do the same again: the book was "Zen and the Art of Motorcycle Maintenance" by Robert Pirsig. Recommended. Especially on rainy days :))