Well its so obvios that you have the flush because you took control and raised when you hit the flush. i agree with RML 100% if your gonna chase on that flop and hit the nut flush your gonna at least value bet and if you get reraised all in your commited to call. He dosnt have a boat anyway because hes not gonna reraise floping a boat. hes gonna smooth call hope you hit the flush or open ended straight so he gets payed off. ABC- Value bet your nut flush hope he calls you with A-9, or pocket 10s.