$11 20k gtd: AKs UTG vs pos 3-bet; should I bet turn?

[RThomas]

I wish I could say I had a read on this opponent, but the only note I had was that he played very loose from the blinds. This was the first hand he had come over the top of a raise. I originally thought that not betting the turn was my biggest mistake, because it seems like I telegraph that I have AK/AQ here and he shuts down with overpairs. Though, I'm really, really confused at what to put him on here.

Should I be betting out on the turn to represent that i'm bet/folding a pair like tens or jacks? I was confused at his check behind on the flop; not sure whether this meant a couple big unpaired cards, or a pair smaller than nines, or what it could be.

PokerStars No-Limit Hold'em Tourney, Big Blind is t1000 (9 handed) Poker Stars Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

MP2 (t18275)
MP3 (t12314)
CO (t23085)
Button (t11471)
SB (t14935)
BB (t3369)
UTG (t8835)
Hero (t24004)
MP1 (t3015)

Preflop: Hero is UTG+1 with K[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/club.gif[/img].
<font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to t2400</font>, <font color="#CC3333">MP1 raises to t2915</font>, <font color="#666666">2 folds</font>, <font color="#CC3333">CO raises to t6000</font>, <font color="#666666">3 folds</font>, Hero calls t3600.

Flop: (t15515) 3[img]/images/graemlins/club.gif[/img], 9[img]/images/graemlins/spade.gif[/img], 2[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
Hero checks, CO checks.

Turn: (t15515) A[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
Hero checks, CO checks.

River: (t15515) 5[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets t4800</font>, CO folds.

Final Pot: t15515