Raise flop BIG.

The free card thing is not really a NL concept.

The free card is a play where you raise the flop a lesser amount than you would like to call on the turn. It's a limit play, and an effective one. But in NL it is not quite as effective.

The flop raise should be for 4 reasons:

1. Villain may fold a better hand (this is a semi-bluff bet)
2. We build a larger pot so it is easier to get all the money in when we hit
3. It disguises our hand
4. We hopefully fold out more of our outs