Typical situation

[Vrax]

AK/AQ, we raise early limps and 1 of them calls or we just or get single caller in SB/BB.

Flop comes A63 with flush-draw and EP player donks about 2/3 potsized bet.

We know about opponent that he likes to bet his draws OOP (maybe hoping to fold out possible pocket underpair). He won a big pot from tight table coach after his A6s busted Kings on 664 rainbow board. He checkraised his trips and called when a nit pushed the flop. We don't know how our opponent plays monsters on drawing board.

Question:
Raise the flop? Call the flop and evaluate turn? Turn-screw him? What's the best option?

[natdang]

If he is indeed semibluffing and betting his draw, then the "Theory of poker" says to give it to 'im. Reraise him, and if he stays in the hand any longer on a draw, it's his mistake.

If he reraises, I think you've gotta flat-call it, and hope (if he's weak) that you have him outkicked. If he's good, watch out and be careful he didnt flop a set. (Though I won't go broke here, you might lose a bit of money raising to find out what he's got) Evaluate the turn.