Double barrel with nut flush draw gets check min-raised. RIPE

[sh58]

it's very marginal, but i think you have the odds to hit your flush. if you hit the flush on a non pairing board you stack him 100% of the time. if you hit an ace or jack, do not bet if he checks to you, or call if he shoves

i don't like double barelling calling stations very much, taking the free card is a much better option IMO.

Cbetting is fine as you have a massive draw and have an equity advantage against almost anything he has. you basically crush his range. but on the turn now you are usually behind, so take the free card