I figured if anyone would know, it would be rafters. I have a power boat with a tiny cuddy...its big enough to curl up inside for a overnight trip, but pretty much everything inside has to go on deck to do so. I have an inexpensive Texsport bag but everything inside of it seems to get soggy even in good weather...I guess from condensation. Mine has a zipper around the top that can be a pain and I think that is where the moisture enters. Is that the nature of the beast or are there bags that really keep things dry? I don't need anything huge...just large enough for a change of clothes or two. Any brand or style suggestions? Thanks for any help on this!