Grayline lets you distinguish between strong and weak echoes. It “paints” gray on targets that are stronger than a preset value. This allows you to tell the difference between a hard and soft bottom. For example, a soft, muddy or weedy bottom returns a weaker symbol which is shown with a narrow or no gray line. A hard bottom returns a strong signal which causes a wide gray line.
You may also like
The layer of water where the temperature changes at least one half a degree per foot of depth. Basically, a layer of […]
An area in a body of water that slopes toward deeper depths.
Rod rings through which fishing line is passed.
Tributary to a stream.