[Putershark]

Both of those hulls are of the self bailing design and I am of the opinion that even full of water neither of them will go to the bottom if the bilge pump were to die... The decks may go awash if you take on some heavy seas, but I do not think that short of a Hurricane could you get enough rain water inside either hull to give you much of an issue. Hopefully one of the members who keep their boat on a lift will chime in on what they have found. Also a simple boat cover to knock the rain off of the hull will do a lot in keeping water out. I know my sunbrella cover sheds water like a duck

Also (but I am not sure) positive hull floatation is pretty much a mandate from the Coast Guard for hulls under 20 feet from a certain model year forward. The year model it started I can not remember though...

The NMMA http://www.nmma.org/certification/programs/boats/ certification provides for a level floatation testing program that Triumph also meets. As far as other damage from water intrusion, if salt water is left inside "any" boat it will eat up electrical contacts in due time. The fuel tanks though are not made of metal and the fuel caps are pretty high on these 2 hulls. If the fuel caps are tight I do not see that as much of an issue either.

Hope this helps?