Run some nylon fibers through a small section of tubing (hollow Larva Lace) and put a small dab of super glue on the end to seal it. Spread and trim the fibers to look like a split tail on a mayfly. Tie the other end directly on top of the hook shank with the body and tails extending a little beyond the hook bend. Tie on a comparadun wing and dub in front and back of it. Whip finish and you have an extended-body mayfly with a Larva Lace body.