Shuffle Decks More Often Deck penetration is a tremendous benefit for card counters. The deeper into the shoe a card counter gets, the more information they have slot online about what cards are available. So, the casinos combat this by shuffling the shoes more often. Card counters are basically nullified into the same position as your average blackjack player on tables that use continuous shuffling machines. The casinos are forced into shuffling more often to battle the amount of deck penetration card counters get or keep the games moving along swiftly.