A2s, trips c/r'ed on a wet board

[Pharity]

Hello!
MP1 is 35/1.2/0.7, SB is unknown and BB is very loose (61 vpip) and poor.

Maybe this is a bad spot for PF isolation because of BBs looseness - please comment, but i would like you to focus on the turn.

All responses are very welcome!

Party Poker 2/4 Hold'em (7 handed) internettexasholdem.com

Preflop: Hero is Button with 2[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/club.gif[/img].
<font color="#666666">1 fold</font>, MP1 calls, <font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises</font>, SB calls, BB calls, MP1 calls.

Flop: (8 SB) 2[img]/images/graemlins/diamond.gif[/img], 9[img]/images/graemlins/diamond.gif[/img], 2[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, BB checks, MP1 checks, <font color="#CC3333">Hero bets</font>, SB calls, BB calls, MP1 calls.

Turn: (6 BB) 8[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, BB checks, MP1 checks, <font color="#CC3333">Hero bets</font>, SB calls, BB calls, <font color="#CC3333">MP1 raises</font>, Hero?..