It don’t mean a thing if ain’t got that ping. With apologies to the first lady of song, the late great Ella Fitzgerald, that sums up fish-finder performance. The world’s finest sonar is useless ...

A properly installed through-hull transducer can maximize the performance of down-looking sonar in two ways. First, it has direct contact with the water, so there’s no signal loss as you might ...

Since the first sonar flashers were introduced decades ago, all fish finders work on the same principle. There are three main components of a fish finder: display, transducer, and battery. The ...