KK vs lag and an ace

[krimson]

Villian is extremely loose and aggressive (87/17/3.5)
Other player is loose passive, (37/5/0.5)

Should I have been any more aggressive then this, like betting the river?

Party Poker 3/6 Hold'em (6 max, 5 handed) FTR converter on zerodivide.cx

Preflop: Hero is Button with K[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/diamond.gif[/img].
UTG calls, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises</font>, <font color="#666666">1 fold</font>, BB calls, UTG calls.

Flop: (6.33 SB) 6[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, <font color="#CC3333">UTG bets</font>, <font color="#CC3333">Hero raises</font>, BB folds, UTG calls.

Turn: (5.16 BB) 6[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">UTG bets</font>, Hero calls.

River: (7.16 BB) 3[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
UTG checks, Hero checks.

Final Pot: 7.16 BB