A multiway drawing hand

[Isura]

Opponents are kind of passive, I don't know much else about them. I feel like a blind guy in an orgy in these hands. I was hoping for a river overcall but I dunno if raising is better. How did I play all streets?

Party Poker No-Limit Hold'em, $ BB (9 handed) FTR converter on zerodivide.cx

UTG+1 ($31.90)
MP1 ($8.55)
Hero ($24.65)
MP3 ($75.95)
CO ($11.45)
Button ($89.90)
SB ($41.30)
BB ($18.40)
UTG ($20.50)

Preflop: Hero is MP2 with 8[img]/images/graemlins/heart.gif[/img], 9[img]/images/graemlins/heart.gif[/img]. SB posts a blind of $0.10.
UTG calls $0.25, <font color="#666666">2 folds</font>, Hero calls $0.25, <font color="#666666">1 fold</font>, <font color="#CC3333">CO raises to $0.75</font>, <font color="#666666">3 folds</font>, UTG calls $0.50, Hero calls $0.50.

Flop: ($2.60) 7[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
UTG checks, Hero checks, <font color="#CC3333">CO bets $2</font>, UTG calls $2, Hero calls $2.

Turn: ($8.60) J[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
UTG checks, Hero checks, CO checks.

River: ($8.60) 4[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">UTG bets $3</font>, Hero calls $3, CO folds.