In low limit I prefer to open and get as many bets in on the flop with the nut flush draw. If I open and am raised, i cap it. That one extra Small bet on the flop also helps to disguise your hand ( Imagine if u had flopped top set..it would be played exactly the same way). If u miss on the turn try to keep it cheap but even if u have to cold call 2 bets the extra bets on the flop give u the correct odds to pursue your draw.