Re: tube flies
The hook eye is pushed into a piece of soft, flexible "junction tubing" that is forced onto the stiff, plastic shaft. For steelhead flies, we generally use hooks like Gamakatsu Octopus, Gamakatsu Finesse Wide Gaps, or Owner SSWs. By using tube flies, it allows you to tie a very large, long fly, but use a small, wide gap hook that has better holding power than a comparable longer hook. The longer hook of a typical fly gives the fish a lot of leverage to pry a hook out, tube flies resolve that issue to some degree. The fly also has a tendency to slide up the line once the hook releases from the junction tubing with a fish on...helps reduce wear and tear on your fly.