I recently (less than a month) bought a 2005 four winns 183 ski/fish boat. Everything seems to be working when testing it except for the float switch. I poured water in the transom almost all the way to the bottom of the engine and the float switch never activated the bilge pump. The bigle pump works when manually turning it on. I'm just worried that if I leave this boat on the dock 9which is an hour away from my home) for the rest of the season it may get some water accumulation. The boat has 2 batteries and a switch to control both of them. The manual says the float switch will still activate the bilge even when the battery switch is set to off. Any suggestions on fixing the problem?