NL25 KQ flopped the nuts, scare card on turn multiway

[checktheriver]

BB just sat down.
UTG is a 75/35/1.5 maniac who basically calls and floats with ATC.
What is my plan when the flush hits on the turn ?

PokerStars No-Limit Hold'em, $0.25 BB (5 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

BB ($24.40)
UTG ($34.40)
MP ($40.90)
Button ($44.95)
Hero ($31.55)

Preflop: Hero is SB with K[img]/images/graemlins/spade.gif[/img], Q[img]/images/graemlins/diamond.gif[/img].
UTG calls $0.25, <font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises to $1.5</font>, BB calls $1.25, UTG calls $1.25.

Flop: ($4.50) 9[img]/images/graemlins/diamond.gif[/img], T[img]/images/graemlins/heart.gif[/img], J[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets $4</font>, BB calls $4, UTG calls $4.

Turn: ($16.50) 2[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
Hero ??

[C4LL4W4Y]

preflop, i probably just complete in the SB. i like isolating from the BTN, but playing OOP against this maniac is only going to be profitable when you hit, since you'll probably be c/f'ing anything else.

as played, i'd probably b/c 9 to bb's shove (odds will be too good to fold) and probably b/f to utg's shove, because a guy that calls/floats atc certainly isn't raising atc.