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Found this variation of Ian James' fly on a NZ site, the deer hair replacing the dubbing/clipped hackle abdomen of the original. Weight as necessary, although I've read where some folks prefer to add split shot to the leader instead. Change color/size to suit your needs.
hook - Dai Riki 280 #12
thread - Danville 6/0 black
abdomen - deer hair spun/clipped
thorax - dubbing chartreuse
head - ostrich herl black
hackle - black hen
mash barb, start thread, wrap to point above barb
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you could create a standard spun/clipped body, but using a dubbing loop allows for a sparser body, and the split thread method makes it much easier, for me, to capture the deer hair than a dubbing loop; your choice
clean, stack (butt first) a clump of deer hair
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insert in clip, spread evenly; trim tips
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split thread, insert clip, slide clip back to allow thread to capture the deer hair and release from the clip
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spin the bobbin to create a "chenille"
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wrap forward to 2/3 mark; trim to a tapered shape
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dub thread/dub thorax
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tie in ostrich herl; spin with thread and wrap head; tie off but don't trim
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tie in (folded) hackle by tip; wrap, tie off/trim
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take a few more wraps of twisted ostrich in front of the hackle; tie off/trim, half hitch x 2, SHHAN
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Regards,
Scott