Well the good news is that your bluff worked here. At the 6's it's not that hard to fool someone.

I would not attempt this river bluff at a higher level against decent players however. When you make a big raise on the river after the 3 [img]/images/graemlins/spade.gif[/img] falls, what are you representing? 3-3? Not likely.

The river raise means you either slowplayed a flopped monster (8-8, possibly 4-4), or you missed a draw and are raising with air. I would have raised the flop with trip 8's so that a flush draw makes a mistake by calling.

All I know is if I'm the villain I won't need much to call this. When I see someone play passively before the river and then make a big raise (or a big overbet) on the river after a blank falls it's either a full house or better or air. The odds of air are usually higher.

EDIT: Oh yeah, fold pre-flop.