I have seriously thought of doing this in the past, but have never done it. My current employer forbids me from taking on outside employment. My plan was to use a four wheel dolly with a plastic tub on it. I was planning on using this, and a python basically. I thought of having a wastewater tub and a clean water tub, but hadn't come up with a good way to pump water from the tank into the but. I can't say that I spent a lot of time on it either.