But why does he ever just overcall the flop with air in the first place? This is quite a weird thing to assume someone is capable of without more accurate reads. Do you feel he's just spazzing out with a weak pair - turning it into a bluff on the turn?

he might not rep a huge amount, but does he really have that much air in his range that needs to bet the turn in the first place here. Overcall/floating flop with just overcards or whatever seems really bad and not something even most aggro guys will do very much imo.

I mean, I agree his overcall on the flop looks like a weak range, but I'd think more of a sd valuey/possibly a draw checking back the turn sort of weak rather than a needs to bluff sort of weak.