They say you can never have too many bilge pumps... I have one on the boat, with a switch, and connected direct to the battery. However, it takes several inches of water to activate it. A have the manual pump also... I wanted to add another electric pump that can be turned on or off (as needed) from the electrical pannel at the nav station. Like after a shower. Trying to decide how to route the outlet of the pump. Any sugestions?