Again, I'm not arguing I am just trying to figure out what everyone is talking about...but Booyah makes very good baits and they have some that look just like those..
The boogie bait is a little different.
1. it doesn't have a football head. I think this is important, because on the Karu the blade hits the head everytime creating a rattle that I believe helps the fish find the bait, making the hook up ratio much better on the vibrashock.
2. the way the blade is attached to the head of the boogie bait look to me like it would hinder the blade swivel. It also looks like it would bend easily. If that were to happen your blade would bind and your out 6 bucks.
3. the blade design is much different. For instance the boogie bait has holes in it. Thats ok. It won't affect it much, but it will most likely make the bait run shallower is all.
Hope that helps. Her's some pics so you can compare the to and see what I'm talking about.