When I received this sample pack at the fly shop I quickly cranked out two more with the material provided. I used a #10 TMC 8089 hook because they are big, but light weight--thus easier to counterbalance and force the hook point up. The rest of the fly I made as simply as possible--dubbing underbody, rabbit strips over the back and a couple rubber legs. My analysis? The fly tying world is full of gadgets that come and go, but these are pretty cool. If you're into streamers, you should give them some serious consideration.