1) If they reliably call down light then bet bigger and don't stop firing when you flop top 2 pair or better.
2) If they're willing to check/call all the way with both top pair no kicker and two pair, assess both the scare cards that are out and the likelyhood of being up agiainst 2 pair to decide whether or not you want to keep firing with a hand like tptk.
For example, say you have A
Q
and the board comes A
J
T
, 6
, 5
. Bet the flop and turn, but don't fire on the river. Your opponent could easily have two pair with a hand like JT or A6, but is afraid to raise thinking you might have a straight or bigger two pair; he could also have a busted draw like 98 or two random
s that he won't pay off with anyway.
On the other hand if you have A
Q
and the board comes Q
8
4
, 6
, 4
. Value bet this the whole way. Bigger 2 pairs, trips 4s, boats, and turned straights while possible, are a lot less likely holdings than stuff like top pair KQ through Q9, plus, even passive players will raise huge hands before the river a good percentage of the time.
3) After raising pre, when you miss the flop or flop something like a flush draw, put out a flop continuation bet as even loose/passive opponents will fold when the completely miss. If they call your flop bet and you don't improve on the turn, check and hope you see a free river. If you don't improve on the river check again. Often they'll have a busted draw that they won't bluff with when they miss.
Just my opinion...