[rtrombone]

You are right that if you put a play on him at the river he will still often call you. I acknowledged this in my prior post.

The type of opponent I would make this play against is a weak-tight one. Someone who is pretty reasonable in terms of hand selection but is overly concerned with saving bets. Someone who is too willing to believe you have the hand you are representing. You know the type--you can easily slow them down with a raise at any point, and they surprise you with the hands they show down because you would've played them a lot faster.

Putting a play on a loose bad player is suicidal. These guys will go to showdown with any pair. Putting a play on a good, tricky player is also difficult. You see, good players recognize that when a hand gets heads up, it pays to be extremely aggressive. All you have to do is get one guy to fold to win.

It almost gets to the point where if you're heads up with a tricky player, you're more worried about a raise than a call. Because a good player knows that when he calls, the only way he's going to win is if his hand is good. Whereas if he raises, his opponent may fold...

You've stated that this guy is a tricky player. What it comes down to, then, is what you think his impression of you is. If you think he perceives as you as tight and straightforward, go ahead and make it 3 bets at the turn. If you think he thinks you're tricky, I don't think he will fold to a 3-bet.