Going after your read

[Roy6]

3/6 at Prima

Hero raises A [img]/images/graemlins/spade.gif[/img] Q [img]/images/graemlins/diamond.gif[/img] in CO, only BB calls.

He is 28/17 so far, only 40 hands. He seems to be TAG. I saw him bet/folding once.

2 [img]/images/graemlins/diamond.gif[/img] 5 [img]/images/graemlins/heart.gif[/img] 6 [img]/images/graemlins/club.gif[/img]

He checks, I bet, he raises, I call

I suspect a bluff here, with 78 OESD. He may have a pair, but I don't think he defends with hands containing a 5 or 6 (maybe A5, A6).

Turn is K [img]/images/graemlins/club.gif[/img]

He leads, I raise, he calls

River is 7 [img]/images/graemlins/diamond.gif[/img]

He checks, I...

So I think he has 78 here a lot. He has an OESD so he didn't muck on the turn (a gutshot would do, maybe a low pair also). So he paired up. Is it +EV to bet here representing the King and trying him to fold his pair?