A typical SUV or minivan with tinted windows that only parks there during business hours probably wouldn't attract much attention if the business was large enou

A typical SUV or minivan with tinted windows that only parks there during business hours probably wouldn't attract much attention if the business was large enough that no one knew everyone that worked there. Integrate the yagi antenna into some part of the car like a bike rack or hide it inside a plastic roof carrier. Show up around the time that people are starting to come in so you can get a good spot for the antenna and leave when everyone else does.