Certain western spring fed rivers, such as Silver Creek in Central Idaho are famous for hatches of Trico Mayflies. During the spinner falls of these tiny mayflies, trout can feed ravenously, but be very selective as to the size, shape, color and attitude of your fly. Extremely thin tippets are the rule. 7X isn't out of the question. Very lightweight rods are often used to land large trout. Down-stream drag-free presentations are the rule. During these spinner falls the Organza Wing Trico Spinner, and perfect presentations are the keys to success.
Organza is a thin, sheer fabric traditionally made from silk. Many modern organzas are woven with synthetic filament fibers such as polyester or nylon. Traditionally a fabric used to make brides and harem women more attractive, Organza has found favor with fly tiers for several applications, such as the clear spent wings of mayfly spinners; the fabric is cut in narrow strips with the fibers running parallel. Then the strip is tied cross-wise of the hook. After the rest of the fly is tied, the cross fibers are easily picked out to leave only the fibers that were tied perpendicular to the hook. These clear crinkled fibers are lightweight and when treated with floatant will support the fly on the surface of calm water. The crinkles in the fibers give a sparkly effect just like real clear mayfly spinner wings. Organza fibers have become the most popular material for this application.