[Kooch]

If you smooth called the turn, now that your heads-up with what you figure is an overpair, I'd feel confident that he's either going to lead out on the river and call your subsequent raise, or check-call to see what you have (obviously assuming he doesn't hit his hand). I don't think you'd played it incorrectly per se, but if you were looking to extract a little more, I might have waited til the river, since you were heads up with a good feel of where your opponent was at, and you had position.