Would you call it quits if you were collecting money and fame for something, even if it was silly? I wouldn't! I'd search for Bigfoot as long as possible.
Its a good show about naive men and silly delusions.
If it makes them happy then so be it. I have my own ideas about Bigfoot/Sasquatch and Nessy. But to each their own.
A couple years ago I declared my land as a Bigfoot Sanctuary. I haven't figured out how to advertise for the Sasquatch yet. They don't watch TV ads much.
That stupid TV show is so silly. Going out at night with a camera crew and lights, and howling, has to be the way to drive off any Sasquatch in the area, if there is one.