I think casino players use a structured betting procedure or a subtil method. Many casino players approach betting in a more impulsive manner, relying on their intuition or luck to guide their decisions. However, many experienced players, especially those who consistently win at the casino, use some form of structured betting approach or a subtil method to maximize their chances of winning. Ultimately, it is up to each individual player to decide which approach to take when placing bets at a casino.