I like them, but I have had the same problem with losing air. A lot faster than 30-45 min, too. I may buy ONE more, but if IT leaks after the first day out, forget it. LOL.

BTW, have you seen the ones (I think it' s a Fieldline)with a small inner tube zipped up in a cordura cover? Sets you up higher than the self inflating type. Seems more durable too.