I've got a Caddis that I'd let go for like $25. It is pretty good shape although the main zipper has come un-done once. I have fixed the problem with straps and it works fine. The main problem with the float tube is that it has no back rest which I usually use for extra storage.

Here's a picture of it:
(http://members.fortunecity.com/pxj/album/000604a.htm)

Where do you live?

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You can't catch tomorrow what you kill today - please practice catch and release.