My 1980 Hunter 33 has a "Gusher" type pump mounted on the back of the Head wall, down there where the water heater is. It appears that it's intended use is to pump waste into the ocean...I know, beyond the three mile limit! My question is: Has anyone out there ever re-plumbed this system to pump out the waste holding tank to dock side? I'm trying to develope an inexpensive and simple "pump out station."