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FISH ARCHES
Fish arches are created when the cone of sound passes over a fish.
The distance to a fish when the cone first strikes it is shown as "A" on the
next page. When the center of the cone strikes the fish, the distance is
shorter as shown "B". As the cone leaves the fish, the distance in-
creases again as shown in "C".
When the Fish I.D. mode is off, the depth of the water will affect the size
and shape of the fish arch due to the cone angle diameter. For example,
if the cone passes over a fish in shallow water, the signal displayed on
the MagnaView may not arch at all. This is due to the narrow cone
diameter and the resolution limitations of the display.
Very small fish probably will not arch at all. Medium sized fish will show
a partial arch, or a shape similar to an arch if they’re in deep water.
Large fish will arch, but turn the sensitivity up in deeper water to see the
arch. Because of water conditions, such as heavy surface clutter,
thermoclines, etc., the sensitivity sometimes cannot be increased
enough to get fish arches.
SURVEYING A LAKE
The most successful anglers on any body of water are those who fish it
day after day and year after year. Eventually, they learn the hot spots
that produce fish consistently. They discover through experience
where, and at what depth, they can expect to find the fish they want at
any season. And they realize that these productive areas change
throughout the year depending on water level, temperature, food, and
other factors.
With the MagnaView, anyone can eliminate guesswork and concentrate
on the areas where fish are likely to be. Even if it’s the first time on the
lake!
The most efficient way to become acquainted with a body of water is to
survey it with your MagnaView Start with a map of the lake, if possible,
and indicate the promising spots in relation to landmarks on shore.
Keep a few marker buoys in the boat, ready to toss overboard. When
the MagnaView indicates a school of fish, throw the buoy out. With the
school thus marked, you can make your turn and come back to fish in
exactly the right spot. This is essential when you’re far from shore on a
big lake. Unless you mark the school of fish when you’re over it, you
may not be able to find it again.