[roy_miami]

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Even if you raise and someone calls and you get overlay on your draw you have still lowered your implied odds because the bettor will now not bet the turn so if you hit now you only get 1BB and not 2BB, this is something to be considered.

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You raise the flop CO calls SB calls, hit the flush on the turn, you bet one or both call, you bet the river one or both call. You win 4-6 BB's.

You flat call the flop, CO calls. You hit the flush on the turn, SB bets, you raise CO folds, SB calls or folds, you bet the river, SB calls or folds. You win 2-4 BB's.

You gain much equity through deception with a flop raise.

Add in to the equation that there is a chance your ahead of SB and may be able to get the CO to fold hands like small pocket pairs or bigger aces and a flop raise becomes even more sexy.