I just want to put my 2 cents on the different opinions that beavis and hot estelle have on position in heads up play.
It is true, as pointed out by beavis, that the "right to first bluff" can take down many pots for the fact that your opponent will miss the flop 2 times out of 3. What must be said though is that it all depends on your opponents skills. If he understands that you are c-betting he will reraise you with zilch and force you to fold. I've seen this play done many times by some pros on TV with hands as bad as 4-3o on a flop like, for ex., 9-7-2.
If we adjust our play to our opponent w/o falling into predictable patterns then strategies like c-betting when rags flop can be effective most times, but it will need to be mixed up with other types of plays in order to obtain that effect if not they can backfire.
When your heads up at the end of a tourney you will have to show that you occasionally raise with less than premium hands, just to make an example, so he won't necessarily think that you missed that flop. I'm not exactly an expert on heads up play but I can say that unless you set up your opponent with some decieving strategies acting out of position can be very expensive.
Playing heads up requires a great amount of skill and some players have mastered that area so good that basically they only play cash heads up games. If you look on pokerstars
in the $25/$50 tables and up, you will find these guys playing and notice that all they play is heads up, you won't find them on full or 6 handed tables.