Tail Grizzly marabou, olive (one clump, one body length)
Body MS Bugger Dub (Fly Tyer's Dungeon), brown/chartreuse with rubber legs (in a dubbing loop)
How to tie it
Mount an Allen S402BL in size 8 with a 4mm black nickel brass cone head and about fourteen wraps of.015 lead wire already on the shank.
Push the lead up against the cone. On smaller sizes Tim drops the cone but always keeps the wire, because he wants weight near the front.
Start olive dun UNI 6/0 just behind the wire and cover the wraps. The wire is not going anywhere, but covering it means it will not show through if body material is lost to a fish.
Take the thread to the rear and tie in a clump of olive grizzly marabou as the tail, about one body length, with three or four wraps. The grizzly version carries a dark variegation through the olive.
Trim the marabou butts as close as possible to where the lead ends, so the underbody stays uniform.
Form a dubbing loop with a Stonfo Elite dubbing tool, wind the thread forward and secure it with a half hitch out of the way.
Load the loop with pre-broken-up MS Bugger Dub, making sure there are rubber legs in every section of the loop rather than in clumps. Dubbing this material straight onto the thread does not work. The rubber legs fall out, which is the whole reason for the loop.
Spin the loop, running a fingernail up and down the twisted rope so the legs kick out in every direction, then spin a little more.
Wrap the loop forward to the cone, stroking the material back if you want it palmered. You lose a little dubbing that way and that is no bad thing.
Lock the loop off behind the cone with a couple of turns, clear the tool away and tidy the small gap that appears when the material springs back towards the head.
Whip finish with the knot tight behind the cone so nothing creeps forward and bangs against it.
Brush everything out against the grain, trim any over-long rubber legs, and open up legs that got bound together in the loop with the points of the scissors.