Its something that I might at some point look into getting into properly...however, there are LOADS of people out there doing it already...So I guess you can call it a hobby
I have detailed a number of cars now and im constantly learning more about it...its just time and money consuming trying to keep on top of the new products and learning how the products work differently on different types of paints etc
A foam lance is just an addition to the jet wash (an attachment)...fill it was a diluted ratio of snowfoam...and away you go! Ill get some pics when I get round to foaming the Previa
bassboy