I back my toon in the driveway, jump out, and hear water sloshing around in my starboard toon. Don't sound like much but I want to investigate. I get a small hose to siphon the water out and when I remove the top (only) plug, air escapes!!! So, if there's a hole letting water in, then why the heck is air pressure, however slight, building in there and not escaping out of the same hole?????? The only thing I can think of is condensation. But the port toon doesn't have any sloshing. Thanks guys for any answers.