Too aggressive with my underpair or SOP?

[chesspain]

Party Poker 2/4 Hold'em (10 handed)

Same loose, fishy game as in my "AK unimproved post," and the Button is the same player to whom I folded that pot on the river.

Preflop: chesspain is MP3 with 8[img]/images/graemlins/heart.gif[/img], 8[img]/images/graemlins/spade.gif[/img].
<font color="666666">2 folds</font>, UTG+2 calls, <font color="666666">2 folds</font>, chesspain calls, <font color="666666">1 fold</font>, <font color="CC3333">Button raises</font>, <font color="666666">1 fold</font>, BB calls, UTG+2 calls, chesspain calls.

Flop: (8.50 SB) 2[img]/images/graemlins/heart.gif[/img], 5[img]/images/graemlins/club.gif[/img], J[img]/images/graemlins/heart.gif[/img] <font color="blue">(4 players)</font>
BB checks, UTG+2 checks, <font color="CC3333">chesspain bets</font>, <font color="CC3333">Button raises</font>, BB folds, UTG+2 folds, chesspain calls.

Turn: (6.25 BB) 3[img]/images/graemlins/diamond.gif[/img] <font color="blue">(2 players)</font>
chesspain checks, <font color="CC3333">Button bets</font>, <font color="CC3333">chesspain raises</font>, Button calls.

River: (10.25 BB) 6[img]/images/graemlins/heart.gif[/img] <font color="blue">(2 players)</font>
<font color="CC3333">chesspain bets</font>, Button folds.

Final Pot: 11.25 BB
<font color="green">Main Pot: 10.25 BB, won by chesspain.</font>
<font color="green">Pot 2: 1 BB, returned to chesspain.</font>

1. How was my play on this hand?
2. Assuming my read was correct in that he had unimproved overcards, should I have bet the river or checked in order to play bluff catcher?