I have a 1975 E23 and my bilge floods significantly when I'm underway, particularly under power. It's not a problem when I'm at the dock. I'm wondering if it's the keel housing, although nothing was found when the boat was out of the water. It's such a confined space it's hard to fit bilge pumps in there, so the former owner rigged a hand-powered bailer with hoses that run all the way from the bilge to the cockpit. I'm single handing, so I can't go below deck when I'm underway. Has anyone else had this problem and what did you do to address it?