Trouble with top pair out of position

[Isura]

CO has been extremely loose so far, and he'll call the flop with any pair, any draw, and decent overcards. He is also pretty aggro. Previously, I bet 2 pair on the turn, and check/called his river bluff (pot size) in a smallish pot.
UTG is new and unknown. The river was my attempt at a block, but I'm thinking check/call or check/fold might be better. Anyone play the flop or turn differently?

Party Poker No-Limit Hold'em, $ Hero (6 max, 6 handed) converter

CO ($143.30)
Button ($62.45)
SB ($96.50)
Hero ($129.20)
UTG ($83.05)
MP ($0)

Preflop: Hero is BB with Q[img]/images/graemlins/diamond.gif[/img], T[img]/images/graemlins/spade.gif[/img]. SB posts a blind of $0.50.
UTG calls $1, CO calls $1, <font color="#666666">2 folds</font>, Hero checks.

Flop: ($3.50) T[img]/images/graemlins/diamond.gif[/img], 5[img]/images/graemlins/club.gif[/img], 2[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">Hero bets $3</font>, UTG calls $3, CO calls $3.

Turn: ($12.50) 6[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">Hero bets $7</font>, UTG folds, CO calls $7.

River: ($26.50) 5[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets $10</font>, <font color="#CC3333">CO raises to $60</font>, Hero folds.

[orange]

I think a c/c would have been better.

[Allinlife]

bet less on dry flop

bet stronger on river, 15$ or so then fold to a raise.

anyone got a likely range for CO?

[TheRegulat0r]

Why are you betting the river? What worse hand calls? What better hand folds? Obviously your hand doesn't like a raise very much.

Maybe T9s calls? I don't think he folds anything you beat.

Check/Call vs. this opponents is ok I think. Check/Fold isn't far behind though.