Started getting the boat ready. Late this year but it has been cold and wet most weekends so far. Replaced impeller which was 3 years old. Still soft and not cracked, only minor wear marks on the fins from the eccentric plate. New impeller, o-ring, and brass plate as the old one was quite worn soi I've had a new one sitting on the shelf for a while.
Then I broke one of the three bolts that hold it together. Drilled it out and used an extractor then off to the hardware store for 3 new bolts. Surprised the bolt snapped before the brass stripped, but the old bolts were fairly crusty. I think next time I'd like to do a full rebuild on the pump with new bearing and seal.