Good advice from Benny...1" of water in bilge in a 35.5, under normal use would not be an issue. Condensation from reefer or ice box drain (if not a reefer) would cause that as well as bilge pump not being able to remove all water. Draining from shower pan could also get into bilge if you don't have a separate sump pump for shower pan. My 35.5 is usually dry as a bone, but we've been in a drought, haven't used shower in years, and reefer currently is not running. Some 35.5s will leak through mast, down through compression post, into bilge. 1" or so of water would not bother me...ask again with more info. if this is no help.