pheasant tippets makes excellent tails
moose body hair is also an excellent choice for tails
schlappen hackle fibers make excellent legs
a royal coachman doesnt contain wood duck so i wouldnt use it
heres one from skip morris
from the photos ive seen on the internet regarding the "tennesse wulff" which is basically a "royal wullf" tied with chartreuce/lime floss vs red floss, i would tie the nymph pattern shown above with a rib of chartreuce floss or wire.