I'm thinking about a check minraise. It might sound crazy, but there's no risk to giving a free card, and I think we're about even with the range of hands that bet (bare aces, lower flush draws and the rarer flopped sets and flushes). The only hands that we're significantly behind (88 & made flushes), are probably going to 3-bet over our check minraise, and we can safely fold. If they flat call our c/mr, we're in good shape, b/c they're likely drawing to a worse flush. I think bare aces and air fold to a c/r of any size. Thoughts?
c/min raise is a great idea, for all of your above mentioned reasons.