i also have 2 tanks that feed from the top though, i run lines from my tank through filters to a electric switch to control which tank i draw from, then to my holly blue electric fuel pump mounted on my stringer just in front of the back of my motor then to my fuel and water separator then on to the pressure regulator etc. bottom line is the fuel pump gets wet and no problem so far when they are mounted on a car they get wet so thats my logic.