If lake trout are so abundant, why don I see more lake trout on my fishfinder?
On the sonar screen, the fish is displayed in arcs. By the size of the arc, you can fairly accurately judge the size of the fish. Also, by the length and height of the arc, you can draw conclusions about the proportions of the fish’s body. If the arc is elongated, it means that the fish has an elongated body shape. If the arc is high and short, then the fish has a high body. The size of fish can be judged automatically by enabling the FishID function, and the screen will display the conditional size of the fish.
However, this does not mean that there are no fish, I would use fish finder only as an auxiliary tool.
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It is incorrect to assume that a region of a reservoir is devoid of lake trout just because they can’t be seen on a fishfinder (sonar). Netting in Colorado and in other states demonstrates the presence of high lake trout numbers even when deepwater targets cannot be detected by sonar. Another “error-of-ego” is to assume that a fish target that won’t strike a properly presented lure is not a lake trout. Both of these sonar interpretations contribute to angler underestimation of lake trout abundance and to a disbelief that lake trout numbers could be at problematic levels when in fact, unbiased scientific data are clear.
