They pull in to any town, USA or Canada, go out that night, and get bigfoot responses. This is a hot spot of bigfoot activity. But... we gotta be moving on to the next location.
I saw a show on leopards in Mumbai. The guy wanted to know if they lived in a big park in town. He took five over the counter, common as dirt game cameras and set them up. The next morning he had good film of a leopard. These bigfoot nuts could invest $10,000 in cheap game cameras and have one on every tree, and leave them for months. Nope, yell a few times, get in the car and leave.