The best hot dog stand I have ever seen was in the most competitive environment, imaginable. A block long strip alongside the NYS Capitol building. The stands were wheel to wheel, each hawking different goods.
By far the most successful stand was the one that hired well endowed SUNY gals in skimpy outfits.
The food was crap, but the lines were long, every single day.
Of course no self respecting Roadfood Professional would do this sort of thing, but I think there is a chain that does do it,something to do with owls, I believe. Since the chain is successful, perhaps you could try your own owl calls to attract customers. Call me a nature lover, but I think it would work.