Rowell's Sticky Sculpin Tube Fly

This is what fishing guide, Nick Rowell says about his fly:
"The Sticky Sculpin was originally tied for targeting big Alaskan
rainbows, while guiding on the Kanektok River. Since then, it has
become a go-to steelhead fly for me. I tie this fly on when the river
drops and clears, or later in the season when the fish have been in the
river a while. It is especially productive
in the spring, and seems to get hit extra hard that time of year. I
will also go to the Sticky Sculpin as a comeback fly, or as the second
fly through a run. Tie one on the next time you find a fish with another fly, the natural look of the sculpin will often convince them to eat."