Vexilar LC-10 - Manual (Page 16)

SEEING FISH
With the FISH ID feature on, any target that the LC-10
identifies as a fish will change to a fish symbol shortly after
it appears on the screen.
With the FISH ID feature off, the Clean Line feature will
help you identify fish from floating debris. If the target
appears cleaned out, you can assume it's something sig-
nificant, like a fish. In heavy weeds this can be difficult to
see. It is best to use the Fish ID feature in these conditions.
SURFACE CLUTTER
The line of information going across the top of the dis-
play represents the surface of the water. This line can get
quite wide at times, due to surface clutter. Tiny marine life,
such as algae or plankton, can be responsible for this.
Choppy or rough waters can also be a cause as tiny air bub-
bles are forced down under the surface. Surface clutter has
little effect on the performance of the unit.
HIGH SPEED OPERATION
The LC-10 can read depths at almost any boat speed.
Due to the limited speed of the display, the displayed bot-
tom may be some distance behind you, depending on how
fast the boat is traveling. Use the A-MODE feature to help
you with high speed readings. Here, high speed is defined
as any speed at or above the speed at which the boat planes
out. Once the boat starts to plane, turbulence will develop
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