I have way too much uncertainty here to raise. I think you lose a lot of money to hands you aren't beating and don't gain much from those you are.
I agree. In the absolute best case scenario we have two conditions: he has AQ and he is either beyond horrible or is on epic tilt. Otherwise he's never calling with worse.
The only hand that is ahead that I could imagine him folding with any real frequency would be Ts9s for a turned spade draw that backed into two pair. I think it's incredibly unlikely that he even holds that hand due to the flop play, though. He would have to have decided to nearly min-raise bluff with second pair versus a guy (me) he knows nothing about.
I'm sure we could get aces up to fold occasionally, but not nearly enough to make it profitable to raise imo.