Check this Bad Ass Streamer video.https://www.youtube.com/watch?v=GWwc_Y86YRE
This streamers is an articulated Pattern and is about 5" long. It uses a Fish Skull head and is tied in Black and Purple with Marabou, Arctic Fox, Schlappen feathers, Chenile and Flashabou.
The colors are great for low light or water with color in it. The fly really moves water and will entice a strike from the big boys that are defending their territory or a big fish looking for a meal.http://www.youtube.com/watch?v=3ONwXps8vtg
I have had a high degree of success with this fly so give it try and let me know what you think.