[nightlyraver]

Here is the big question: How many, if any, pocket pairs will the BB check preflop in this spot?

Here is the smaller question: How often will the BB bluff with no pair, no draw?

Even with all of your outs, you are getting very poor pot odds to call even if the BB just has a hand like K2o. If he generally will raise preflop with a pocket pair, then he either has an A, a K or absolutely nothing. Given the pot odds, he will have to bluff more than 60% of the time, I belive, for you to stay in this hand. In this case, you should put in a small raise and represent an A. Keep in mind howere that he may be very reluctant to put you on an A since you did not raise preflop and you have been playing aggressively.

HOWEVER, if he will check many pocket pairs preflop, then you are ahead of more than just a pure bluff. For example, you are ahead of a pair of 5's, he will and should bet a pair of 5's after you check, you should now be more inclined to put in the small semi-bluff raise so you can win it now since he probably will not pay off your draw.

One other move to consider is to simply bet out on this flop. If the BB is tight and will not raise on a pure bluff, you should bet this flop and you'll win it far more often than 35% of the time, justifying a semi-bluff bet of around 1/2 the pot.