This weekend I had a
I bought a brass 3/4 inch 90 degree elbow and a brass FIP to hose adapter in 3/4 inch too, and 6 feet of cheap garden hose.
I lifted the sewer grate in the street, screw the elbow, adapter, and hose together, then carefully tapped the brass 3/4 elbow into the Marelon pump out fitting on the side of the boat...and then emptied the tank right into the sewer (check your local regs on this of course)
I took the hose with me, and filled and emptied the PP three times to flush everything out. Sure beats carrying the PP up and down the ladder....
Picture to come ....
