The Y.B.T. (or yellow beaded thing!)
Here's a very good fish killer from the U.K. it's based on an original from Nigel at Lakeland Flytying which I modified to suit local waters.
Size 10 shrimp hook i.e. Kamasan B110. yellow 6/0 or 8/0 thread is wound down to bend and then tie in a clump of fibres from the end of a yellow marabou blood plume about the same length as body, lash these down along shank and finish thread at tail end. Tie in 3 yellow ostrich herls and a 20" appprox length of 7lbs nylon with an overhand knot on the shank . Cover with thread so that this is running along shank and both ends finish at tail position. Trim away short end of nylon and Superglue this area and leave to dry.
Thread 5/6 yellow glass beads onto a soft brass embroidery pin so that they fall to the headed end of pin. Put a slight curve on the pin to match hook shape. Use sharp sidecutting pliers to cut away excess of pin about 4mm fo last bead. Next use artery forceps to bend this excess of pin back double on itself to prevent beads slipping off. This "end" is then slightly kinked and tied in at tail so that it stands up above body.
Return thread to head, wind ostrich up and tie off and trim. Bend beaded pin back down onto ostrich and then rib with nylon tightly between each of the beads. Tie off securly at head. Form a neat head and whip finish and Superglue the head.
Fish as a single fly on a floating line with a point of at least 8lbs copolymer/flourocarbon and look out as they can hit this one very hard indeed on ocassion!