I neglected to put in the plug in my Polar Kraft 1650 aluminum duck boat. By the time I got back to the launch site after parking the truck, the battery well was full of water (I will now install either an float switch or just install a new automatic bilge pump). The water rose to a level that I believe the fuel tank was covered, but not for very long. It is a permanent installed one and I am fairly certain it is completely sealed. The fuel/water seperator also drowned. Is there a test to see if the water tight integrity was maintained and the 18 gallons are fine?