50NL; AK 3 bet pot - bluff river?

[Lego05]

Villian is 33.55/28.39/4.62 over 155 hands.

Is bluffing this good...can I make him fold? Or is it spew?

PokerStars No-Limit Hold'em, $0.50 BB (6 handed) Hand History Converter Tool (http://poker-tools.flopturnriver.com/Hand-Converter.php) from FlopTurnRiver.com (http://www.flopturnriver.com) (Format: 2+2 Forums)

SB ($24.70)
BB ($70.40)
UTG ($79)
Hero ($67.30)
CO ($10.90)
Button ($50)

Preflop: Hero is MP with K/images/graemlins/heart.gif, A/images/graemlins/diamond.gif.
<font color="#CC3333">UTG raises to $2</font>, <font color="#CC3333">Hero raises to $7</font>, <font color="#666666">4 folds</font>, UTG calls $5.

Flop: ($14.75) 5/images/graemlins/club.gif, 6/images/graemlins/spade.gif, 7/images/graemlins/heart.gif <font color="#0000FF">(2 players)</font>
UTG checks, <font color="#CC3333">Hero bets $10</font>, UTG calls $10.

Turn: ($34.75) 7/images/graemlins/diamond.gif <font color="#0000FF">(2 players)</font>
UTG checks, Hero checks.

River: ($34.75) Q/images/graemlins/club.gif <font color="#0000FF">(2 players)</font>
UTG checks, <font color="#CC3333">Hero bets $23</font>, UTG ...

[orange]

I check this flop very often.

I would typically give up after that. Sometimes you can get him to fold his 44 or 88, but in general, I give up I think.

[gobby888]

he's checked on the river, so either he has missed his straight draw or has a small pair. You're representing a Q there, it seems reasonable that he might put u on AQ or QQ for a full house.