Getting the most from your electronics means you need to know how to set up your machine and then understanding what you're looking at. With today's new technologies, it's easier than ever to see what's under the surface and help you find and catch more fish. Capt. Cefus McRae and Ken Studivant share their knowledge and tips on the latest sonar technology, including sidescan, downscan and conventional sonar from Simrad and Lowrance.