Pocket nines

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It is usually advised to raise PF with pocket nines but don't you need to flop a set or fold? How many pots do you drag with unimproved nines?

Even if the flop is three rags, you are vulnerable to overcards falling on the turn and river. Terrible implied odds. If no overcards fall, there's a strong straight chance. Perhaps the best flop for you (other than a set) is a rag + pair of rags but you are still vulnerable to overcards.

Is the short answer, just shut up and do what Ed says?