I can't speak for others, but my experience is that the bait is one of the very best vibrations out there. I like to fish it as a shallow crankbait, or a spinnerbait. They are nearly snag proof, and I have caught some decent fish... nothing spectacular, but they are great at covering water and finding fish.
Finally, sure we could easily copy the design, it would be less expensive, but in reality it would be the same as copying a computer program, and this is known as intellectual theivery.
Besides that, I am just a tad bit lazy...LOL... easier to buy them at Uncle Lee's than to build my own.
Just my take, but I am hooked on the bait. It is not a wonder bait that will catch fish everytime, but as all tools, it has its place and time. I can't wait to fish it over the grass beds that are growing.
Danny