My opinion raise it up. For one reason: Last night someone limps in with AA I have small pocket pair catch trips on the flop. He raises of course I call. Turn comes nothing; he checks I bet about $3 small raise compared to the pot then he re-raises I just call. Next card draws another blank he goes all in I call and I break aces. I just think to raise it up to weed the small pocket pairs and other cards.