Hook Wide-gape wet/lure hook (Kamasan B175 or similar), #10, #10
Thread Olive 70 denier / 8-0
Materials
Eyes (booby) Booby foam eyes (paired foam balls), white. Tied at the hook eye for buoyancy (1 pair)
Tail Marabou, olive. About twice the shank length (1 plume)
Tail flash Krystal Flash, blue (pearl-blue). A few strands over the tail (4-6 strands)
Body Dubbed olive marabou (fibers from the base of the plume) (-)
Rib / flash Blue Krystal Flash or blue holographic tinsel (5 in)
How to tie it
Start the olive thread just behind the eye and tie in a pair of white booby foam eyes with tight figure-eight wraps so they sit across the hook right behind the eye. The foam floats the front, so on a sinking line the fly hovers up off the bottom.
Run the thread back to the bend and tie in an olive marabou tail about twice the hook-shank length, plus a few strands of blue Krystal Flash for the signature 'blue flash'.
Dub the thread with soft olive marabou fibers and wind a shaggy body forward from the bend to just behind the foam eyes.
Rib the body with blue Krystal Flash (or blue holo tinsel) in 4-5 open turns for flash and durability.
Build a neat head between the body and the foam eyes, whip finish, and varnish.