I designed this fly for big stonefly patterns. Very buggy looking underwater. After fishing it for a season, the results has earned it a permanent spot in my fly box. It has very few components and fairly easy to tie. TIP: You can increase the turnout rate of flies considerably by make dubbing brushes of the desired colored dubbing. Also the silicone legs tend to fall out from time to time as your creating the dubbing loop, making the brushes will curb this and you will spend less time cleaning up the dubbing that fell to the bench.