[ilya]

I dunno, I would raise the flop a lot of the time. Check-calling the flop and raising the turn is the line donks like to take when they flop trips or a set, so they'll get suspicious if you do it. They will be less likely to give you credit for a Queen if you raise the flop than if you raise the turn, IMO. Also...if someone has a hand like 88, I'd rather raise them now than wait until the turn, when another overcard to their pair will make them more likely to fold.
Also, if someone has a hand like TT, you might be able to get another bet on them on the river, since you'll have a chance to simulate weakness on the turn by checking behind. If you raise the turn, you're unlikely to get called on the river even if you get called on the turn: check, bet, bet looks stronger than bet, check, bet.

I just thought of all this nonsense, so if it seems insane, it probably is.