Rubbermade tote under the wakeplate. Tsunami pump in tote hooked up to fake lake. Run boat on water till thermostat opens (running Sta-Bil in fuel). Shut down, dump out the water and fill with 6 gallons of Rv antifreeze and left it aside. Run antifreeze till pink from exhaust then put the tote back under the plate and run for a couple minutes during this time running the shower and idling the engine. All and all it aimed great with about 1/2 gallon left over.