general train of thought...

when in what looks to be a "marginal/2nd best/dominated" situation...find out where you stand...AS CHEAP AS POSSIBLE W/ AGGRESSION.

meaning, raise somewhere....and the earlier, the less expensive. if you raise, he knows you are going to play aggressively. therefore, he will try to "end it" quickly, too. or call down with his monster.

the tough part is knowing whether to keep betting, or start check/calling down.