When I have tried this it hasn't worked out, but putting out a "fake block bet" is a good way to induce a bluff...probably only works in very very aggressive games though.

In the free video at cardrunners.com, the commentator is playing someone on tilt. he flops a set of 7 in a reraised pot and I think he bet/calls, an ace hits the turn, he check/calls, then pauses and puts out a tiny "block bet" and the opp bluffs all in.

op - river sucks, but I also would block/thin-value bet there...not too many opps have the balls to raise on a bluff.