I have tied a couple of the first pattern and caught fish on them,. As I remember you can added your tail materials, and belly dubbing, chenille, lead wire to the shank and secure it. Leave a space the thickness of the foam behind the hook eye. Poke the eye through the center of the foam strip and add a drop of super glue. Tie down the end of the foam. I added a half a BB size split shot to the undersde of the lip on one and about 1/4 in of lead tape to the forward edge of the lip on another. It will dive a foot or so and has a nice wobble. You could probably add a rattle somewhere and get a little attractor noise also.