We've got a C28 so different arrangement, but, I noticed water that at first I thought was from a leak in the engine raw water intake on the port side. However, I realized that it was also coming from the limber hole that runs to the area under the rear bench seat. (I couldn't see the limber hole under the wiring at first and the water runs down around the raw water intake.) I always have some water in our bilge and as best as I can tell it's from that limber hole. When I've looked through the small access holes under the rear bench seat, there is always water in that area under the stern thruster that flows through the limber hole into the bilge. I have yet to figure out exactly where it is coming in from though.