When I designed the critter, I had one thing in mind- match the hatch. Size, shape, and color would all be taken into consideration. I went down to the shrimp house and picked me up a six inch long shrimp, took a couple of photos, and ran to the vise. I had tried several ideas, all of which had the shape and colors down, but I couldn't seem to find a way to achieve the near five to six inches long that I wanted. That's when I started playing with the idea of extending the body and putting a free-swinging tail. The key was to make it big, but light enough to cast with 8-10 wt gear.