i used to have one of them pickwicks potato ovens,some days i would only break even,did it for 6 months before i started window cleaning hard work compared to cleaning windows,as on your days off i was always going shopping for supplies,preparation the night before,getting up early on weekends to get there and set up,dont forget weekends is a must,the ones iv seen never do as well in the week,plus if you get to your pitch and it rains most the day its not like w/c ing where you can go home you would already be out of pocket before you start each day,nowadays you need to buy your pitch off someone,its like anything if its making good money why would anyone give it up for nothing,sorry to be negative but unless you have the perfect pitch dont bother