You're in late position in a No-Limit Hold 'em ring game. A player raises in early position. You look at your cards, see pocket 8s, and decide to call. The flop is absolutely perfect: Qh 8h 2d. You've hit your set and, with the Queen out there, chances are your opponent has something – maybe A-Q, maybe pocket Kings or Aces. He bets the flop.

In fact, any King, Jack, 10, 9 or a card that pairs the board is likely to give your opponent pause. If he bets on the turn and you raise, you're signaling that the turn card helped you. In effect, you're saying that you liked the flop enough to call and the turn improved your hand in some way. You're announcing that you can beat one pair.

So the flop very well may be the only time when your opponent is willing to make a stand with a single pair. If he bets the flop of Qh 8h 2d and you raise, he's likely to think that you're semi-bluffing -- raising on a flush draw. At that point, he might feel compelled to protect his hand with large re-raise or perhaps an all in. When this happens, you'll take down a monster pot.

It's OK when a flop raise doesn't get you the result you want. You might scare off someone holding pocket Jacks or Ace-King, but you wouldn't make a lot of money off these hands anyway. And, if you're up against Ah-Jh, you may lose a big pot to a flush. But that's OK, because you'll have gotten your money in with the best hand.

Of course, there are some occasions where slow playing is the best choice. If you flop quads or something like Queens full, you'll want to give an opponent a chance to make some kind of hand on the turn or river. But frequently, the best option is to play fast on the flop. It may be your only chance to win a big pot with a big hand.