This is my favorite pattern to fish as a streamer on a Euro-nymphing leader. With this method you can dead drift, jig, horizontally jig, or stall the streamer in front of trout for as long as you want. This results in more committed takes from trout instead of the chases and missed short strikes that can be common when casting and stripping streamers.
I tie this pattern overweighted, compared to nymphs, to get it to depth and keep it there between jigging motions. It is slim compared to a lot of streamers to aid in its sink rate but the zonker strip still provides movement that suggests it is alive. I tie the pattern in black, olive, and natural/tan to see which color the trout prefer on the day.
Hook: size 8-12 jig hook. I use the Dohiku jig but we have lots of other good options as well.
Bead: Tactical Fly Fisher Slotted Tungsten Bead or Inverting Tungsten Bead
Weight: 0.025" or 0.030" lead wire or 2-3 Tactical Fly Fisher Countersunk Tungsten Beads superglued together behind the main bead and buried under the dressing
Thread: Uni 8/0 thread. I use black, olive dun, rusty dun, or tan depending on the fly color.
Tail and body: Narrow width zonker strip. I use the pine squirrel, mink, or micro rabbit strips we have on the site.
Body flash: Hareline Medium UV Polar Chenille in black, olive dun, or gold depending on the fly color.
Hackle collar: Hareline India hen, Nature's Spirit whole hen saddle, or Whiting Brahma hen colored to suit the fly
Dubbing collar: Hareline Ice Dub
Whip finisher: Dr. Slick whip finisher
Bobbin: Griffin Supreme Ceramic or Dr. Slick ceramic bobbin
Superglue: Loctite Brush On