On Saturday, Larry Kingrey and Curtis Andrews will be discussing and demonstrating the tying of springtime patterns for the Arkansas River. Kingrey is a master designer of trout flies, often using a combination of synthetic materials and natural fibers. He is head guide and instructor for Royal Gorge Anglers in Canon City and a contract designer for the Idlywilde Fly Company, based in Portland, Oregon. He also operates Larry's Line, a commercial tying and material company. Some of his most-popular flies include the Better Foam Caddis and Ice series of flies.Andrews, also of Canon City, also is a contract designer for Idlywilde, and with Kingrey ties thousands of flies for the Royal Gorge shop every year. He designed the High Voltage PT nymph, among many others.The clinic will begin at 10 a.m. and continue at least until noon.