Their strategy is more in-depth than that, and they’re more accurately looking for sharps. Somebody working minimum wage in a trailer betting for “their guy” isn’t a problem, even if they’re not going to make the book much money. Somebody working minimum wage in a trailer smurfing for a sharp can be a huge problem. You can read first hand info from professional bettors, books don’t like to reveal their risk management methodology for obvious reasons.

I know that people who work for at least one non-profit, use Google Streetview to see how much money they should ask people for.

A friend working in the business told me. I don't think it's a strategy the casinos would publicly disclose.