Very typical situation - 600NL Party, 150BB stacks

[punter11235]

Villain is very loose, 41/12 and hes coldcalling raises with almost any playable 2 (like 108s, KQo etc). I dont have more reads other than that + I know that this is Party Poker 600NL , so he is not champion of the world.
I check the turn cause I believe I hsould be checking many strong hands on the turn. Now what ? My default is raise but the board is somewhat scary and bet somewhat big... help [img]/images/graemlins/smile.gif[/img]

Party Poker No-Limit Hold'em, $ Hero (6 max, 6 handed) FTR converter on zerodivide.cx

saw flop|<font color="#C00000">saw showdown</font>

<font color="#C00000">CO ($980.85)</font>
Button ($189.80)
SB ($610.95)
<font color="#C00000">Hero ($1226.95)</font>
UTG ($689.35)
MP ($1024.10)

Preflop: Hero is BB with A[img]/images/graemlins/heart.gif[/img], Q[img]/images/graemlins/heart.gif[/img]. SB posts a blind of $3.
UTG calls $6, <font color="#666666">1 fold</font>, CO calls $6, Button calls $6, SB (poster) completes, <font color="#CC3333">Hero raises to $15</font>, UTG folds, CO calls $15, Button folds, SB folds.

Flop: ($60) A[img]/images/graemlins/spade.gif[/img], 9[img]/images/graemlins/spade.gif[/img], 5[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $40</font>, CO calls $40.

Turn: ($140) 7[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">CO bets $150</font>

Best wishes