Mark Romanack and Dr. Steven Holt, authors and trolling experts, are proud to share the latest trolling techniques to help you zero in on your next catch. This edition focuses on diving planers, lead core line, snap weights and other big water trolling gear for the angler who trolls for walleye, trout, salmon, steelhead, stripers and more. The familiar "Dive Curve" illustrates the running depths of the most popular trolling devices at a glance. Each device is illustrated on a different line type and size for the most common trolling leads and speeds. This edition includes over 100 charts designed to help trollers target their catch with uncanny accuracy. All pages are laminated for water resistance.