You can always use it for palmering WBs and stonefly patterns to gain a two/tone hackle effect... as I mentioned in this post on another thread:
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Not that I'll know when I can ever try this experimental guy but I'm tying this WB with furnace hackle. I forgot the value of a two/tone feather. Not much in nature is a single color so the fact that the hackle changes from dark to light as I wrap it to the rear is appealing to me.
As far as the fish goes.. who knows?
Anyway, this is what I've been tying:
Gene