Have you tried using the Marabou as the tail, tying the tail and abdomen like a Pheasant Tail Nymph? I do this for Hex and Isonychia nymphs and it makes a killer breathing and tail wagging fly.
Tight Lines,
Wade
Wade,
Marabou fibers make great tails with lots of movement; works for damsels, too
I was tying the Lingren true-to-pattern and that called for hackle fibers; no reason not to sub as you see fit. By the way, welcome to the forum.