Knowing that they are going to attack you ahead of time can turn a normal easy pass into an easy check. But you also need to give this opponent a chance to bluff. If you raise money against them, they will be forced to fold their marginal hands and bluff, so if you make any made hand you should be sure to go check-calling.
In the last 1 $,000 buy-in tournament, I played my standard loose, aggressive strategy, although I was never too far off the line. A young player on the other side of the table was giving me a "look" even though we didn't play the hand together. I raised with a random hand, made a continuation bet and took down a small pot.
Already on the next hand, when the blinds were high
The flop came down to J
At this point I can be either far forward or far back, but I will never fold top pair when I feel like my opponent's range is very open. A raise doesn't make much sense as he will fold most of his trash (which should be a large part of his range) and call against all the better hands that beat me.
Turn to 6
The same logic on the flop is true on the turn. If he has a better hand, he always calls a raise. If I raise, I'll have him fold any bluffs I keep within his reach by calling. Whenever you have a strong but not a note hand, your main concern is to keep your opponent's range as wide as possible.
It was 8 on the river
When players make a really quick bet on the river, it usually means they planned to bet no matter what card came out. Since his range should be mostly bluffs and a few nut hands, I called and beat his A
Note that if I had raised on the flop or the turn, he would most likely fold (unless he was an absolute geek). The optimal line in such situations is simply a call. If I had a stronger hand like pocket aces, I would still call. I wouldn't raise on the river because again, he usually only calls when I'm beaten.
By playing your marginal hands passively, you keep all bluffs within reach of your opponent while preventing them from bluffing. You also make it difficult for your opponent to get a lot of value when he actually has the best cards because you have never raised.
The next time you face someone who probably has too many bluffs within their reach, take that line and let them bluff their stack.