The following procedure allows a fluorescent bead to be added into a marabou tail. This gives added attraction and gives the fly a different kind of movement to the standard tailed versions. This method is mainly used on long tailed lures. Give it a try and compare.
STEP 1 : Start the thread on the hook and let the bobbin hang free. Take a length of wire or tinsel and lay it underneath the hookshank with the end finishing just behind the hanging thread. (Not in front of the thread).
STEP 2 : Take hold of the bobbin and wind it over catching the wire or tisel as it comes around. Continue winding to secure the wire or tinsel, making sure that it remains underneath the hookshank.
STEP 3 : Continue winding the thread down the hookshank, catching in the wire or tinsel as you go. Check the position of the wire or tinsel after every few wraps, if its moved upwards then unwinf the thread and repeat.
STEP 4 : This is what it should look like. A neat and uniform base for the body with the wire or tinsel in the underneath of the hook shank waiting for the rib to be wound.
STEP 5 : Take a third bunch of marabou and again strip away the fluff and secure to the hookshank. Try and keep the body as uniform as possible for the next stage of the fly.
Here's an example of a lure with a fluo bead tied into the tail. This is a yellow dancer variant that I use with a fluo orange head to match the bead.