Found this on a South African site; kind of like a Jingler in a horizontal orientation. Per the article, "the wider hen hackle adds an extra trigger for the fish as it creates lots of movement and creates a nice profile on the water." Don't know whether that's true or not; I just thought they were cool looking. Change color/size (this one's not an Ansel Adams version; these are actually color shots) to suit your needs.
hook - Dai Riki 320 #12
thread - Danville 6/0 grey
tail - grizzly hackle fibers
abdomen - biot grey
wing - Congo Hair white
thorax - muskrat
hackle - grizzly (oversize by 1), Indian hen
Part 1
mash barb, start thread; wrap to point above barb and create a thread bump
measure (shank length) some grizzly fibers; tie in tight against the bump to set proper angle
moisten biot, tie in notch side down for the ribbed effect (reverse if you want a smooth body); wrap forward , tie off/trim at 3/4 mark
tie in a hank of CH; post up, brush with Sally
tie in grizzly hackle (shiny side out)
prep hen hackle; tie in (dull side out)