I finally break down and pull the trigger on an automatic powered thumper machine. Purchased this thumper on eBay. One year warranty from the seller gave me a sense of relief because I'm thinking like everything else cheap made in China falls apart after a few hours of usage this one is made in the USA and did not fall apart. I knock this thing all day at a high speed and nothing broke or came loose. I was expecting the screws coming loose after a few hours of usage but not a single loose nuts bolts or screws came loose.
Final conclusion I still love my old thumper stick. Thumps loud like thunder. No screws or bolts to get loose. No power is needed. Good exercise for my arms. And if my boat getting attacked by pirates I can beat them silly with my stick.

Most definitely it worked. Lots of hybrids showed up and gathered underneath the boat. I forgot to take a screen shot of the ff to share but literally the entire water column between 25'-35 fow from left to right on the ff was just packed full of fish. I can pretty much see everything with live scope. Those hybrid were actively hitting our jigs and also were actively smashing into schools of shads. I I were able to study the behaviors of these fish. Really interesting!

Nice review.

But did it work on the fish?

Exactly all that but NO mention as to weather or not it did it's job of attracting any fish!

They are loud and annoying like a construction zone and don't work!

I remember back in the late 70's - early 80's there were probably a dozen boats on Whitney that had bass drum pedals mounted to bang the inside hull. A few of those were guides. I got to laughing once on a cold, still winter morning I was catching some good LM and SM on the McCown flats and between there and the Cedron boat ramp there were about 7-8 striper boats congregated and it sound like Indians about to go on a warpath, LOL. Yeah, they were catching the snot out really nice stripers. Saw many pics from that day in the old Lake Whitney Views(maybe, but caint quite remember for sure what it was called) paper.