Should I ever turn on the heat?

[Perseus]

I'm trying to find more spots to defend my blind, and with the villian being super aggro postflop I figured I could pick him off with any type of hand.

Villian is 15/10/3 after 300 hands. I was debating between check-raising the river or just calling down and letting him bluff through.

Party Poker 2/4 Hold'em (9 handed) converter

Preflop: Hero is BB with 6[img]/images/graemlins/club.gif[/img], 7[img]/images/graemlins/club.gif[/img].
<font color="#666666">2 folds</font>, <font color="#CC3333">MP1 raises</font>, <font color="#666666">5 folds</font>, Hero calls.

Flop: (4.50 SB) J[img]/images/graemlins/spade.gif[/img], 7[img]/images/graemlins/spade.gif[/img], 8[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">MP1 bets</font>, Hero calls.

Turn: (3.25 BB) 3[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">MP1 bets</font>, Hero ...