Cheers guys. An interesting twist indeed. Tricky little buggers to tie as the post is fiddly and ends up being rather chunky (and to Dabhoy's point, if you don't judge the length right you run out of room to fatten the thorax). Still, a fun challenge once you've got the hang of paraduns. Easy to tie scruffy but hard to get the Wulff wing tips nice and neat.
SBS from Charlie Craven
here. I just used the Adams colour scheme with mixed grizzly and brown feather for tail and hackle.
Dabhoy. It should be tapered and is. Should be more so. I just didn't get any light underneath the fly and the perspective also makes it look skinnier in the photo than it is. Also, note the point I made above. Will have to keep practicing them. ;-)