NL50 flopped set, but board keeps getting worse

[chris216]

Villain was basically unknown at the time. He seemed to be rather loose-passive though. Button was like 44/11/1.8 over 100 hands. Should I have tried to check-raise the flop? As played, what should I do on the river?

PokerStars No-Limit Hold'em, $0.50 BB (5 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

BB ($57.80)
UTG ($32.90)
MP ($83.75)
Button ($28.20)
Hero ($66.40)

Preflop: Hero is SB with 5[img]/images/graemlins/spade.gif[/img], 5[img]/images/graemlins/club.gif[/img].
<font color="#CC3333">UTG raises to $1</font>, <font color="#666666">1 fold</font>, Button calls $1, Hero calls $0.75, BB calls $0.50.

Flop: ($4) A[img]/images/graemlins/spade.gif[/img], 5[img]/images/graemlins/heart.gif[/img], J[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">Hero bets $3</font>, BB folds, UTG calls $3, Button folds.

Turn: ($10) Q[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $8</font>, UTG calls $8.

River: ($26) T[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>