Again, I like getting the bulk of the money against a probable flush draw on the turn. I flat call his raise, c/f to a diamond on the turn, and open shove any non-J or diamond turn card. This way if the donkey wants to chase his flush he's doing it with much worse odds with 1 to come vs. 2. The advantage a flush draw gets with your overshove 3bet on the flop is that he's guaranteed to see both the turn and the river.
Your edge is soooooo much bigger on the turn against a draw, then it is on the flop. If you're already behind, the money is going in 0n the turn anyways, might as well give yourself the chance to catch up by flatcalling. If Villian has a lower PP, give him the chance to catch his 2 outter (because it's so improbable), and get the m0ney in on the turn when you're an 80/20 favorite over a naked flush draw.
