Book excerpt: Performance Fly Casting gives practical, comprehensive casting instruction for developing a smooth and relaxed delivery, throwing tighter loops, and achieving greater distance effortlessly. SELLING POINTS: *99 detailed illustrations by Joe Mahler *Common casting mistakes and their solutions *Casting under windy conditions, eliminating slack, increasing accuracy, making better presentations, and double-hauling efficiently AUTHOR: Jon B. Cave is a fly-fishing guide, author, and founder of the longest established fly-fishing school in the South. He lives in Oviedo, Florida, and is author of Fly-Fishing Odyssey. ILLUSTRATIONS: 99 b/w