How Much Can You Get Away With Betting Without a Player's Card?

Zach says he looked like joe schmoe to a lot of these strip books. He would walk around with an empty budweiser and walk up to the counter with an empty Budweiser. The bets were always random they weren't coming from one entity. It was figuring out how much you could get away with betting without a player's card when you bet then that really helped out as well.