[doppelganger]

I think you played every street well. If he's on a flush draw you're not going to get any more out of him on the river with a bet, and I don't think checking to induce a bluff is going to work often enough to make it worthwhile.

I don't think bet sizing on the river really matters, there's very little in his range that will call a 2/3 or 3/4 pot bet that won't call a push, so I would just push.