My ski boat uses a low pressure high volume pump to keep a cannister with a fuel filter, and the high pressure fuel pump inside full of gas. This cannister just has a hose that opens back to the gas tank, and fuel just gets dumped back in the tank. Any air that makes it to the cannister also get dumped back in the tank.
this is a picture of the low pressure fuel pump, with the top place removed to clean a screen inside the pump.
