Sonic fishing?

[rubberknees50]

Just received a new bit from US I ordered, a sonic attractor, supposed to put out a vibration/sound that attracts predators, Pike, Perch etc. Looks a little like a washing machine drain pump, or a minature automatic gearbox torque convertor and rotor. Had good reviews, will be interesting to see how it works - if I catch any it must do!
I'll report on how I get on 

[carlton1972uk]

I think I saw something like that on total fishing the other day, when Matt and Yan where fishing for Cat fish in France, cant remember what they called it but it sort of made a pop noice as you popped it in the water and was a sorta boomerang shape, sorta lol. Looked weird