This post will just feature a half dozen of the various options we have at hand on the bench to add flash to wings of steelhead and salmon flies. There are well over a hundred options if you consider colors, thickness, and base properties of the flash material. The six products shown here are among my favorites but are by no means the only products you should consider.
Color consistency: tends to be very good between individual packets of flash and over time. These are synthetic materials and dying tends to be very consistent at least within a batch of flash material. I have seen some variation in (for example) pink Krystal Flash over time because one batch of material came out of the dye vat a little more or less pink than a different batch dyed a year or more later. Overall, though, you can count on purple being purple in packet after packet.
Limpness: varies between products but will be consistent within a produce across colors and time. Lateral Scale, Flashabou, Ice Wing, and Larva Lace tend to be relatively limp. Krystal Flash is not as limp as the previously noted products. Purple Haze holographic flash fibers tend to be a little less limp than traditional Flashabou but gosh the holo effect on the brilliant purple looks nice.
I just took a look in the Hareline Catalog and found something like forty different options for various flash products that are currently available. Some of these are holographic, magnum, micro, flourescent, UV, traditional and innovative products that allow each tyer of steelhead and salmon flies to choose the means of adding flash that most suits our intentions.
Jay Nicholas, winter 2016/17 season