The turn is pretty easy after you see how the flop went down. Betting as a semi-bluff is bad as I almost certainly won't take it down, I'd be unhappy if LAGgy raised me, and it's basically a stupid thing to do in a multiway pot.
Paradise Poker 1/2 Hold'em (5 handed)
FTR converter on zerodivide.cx
Preflop: Hero is BB with A[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/diamond.gif[/img].
UTG calls, MP calls, Button calls, SB completes, <font color="#CC3333">Hero raises</font>, UTG calls, MP calls, Button calls, SB calls.
Flop: (10 SB) 9[img]/images/graemlins/heart.gif[/img], 5[img]/images/graemlins/diamond.gif[/img], 7[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(5 players)</font>
SB checks, Hero checks, <font color="#CC3333">UTG bets</font>, MP calls, Button calls, SB calls, Hero calls.
Turn: (7.50 BB) Q[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(5 players)</font>
SB checks, Hero checks, <font color="#CC3333">UTG bets</font>, MP folds, Button calls, SB calls, Hero calls.
River: (11.50 BB) 9[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, Hero ...