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ACCURATE FISH FINDERS


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I OWN A HUMMINBIRD FISH FINDER AND MY DAD HAS AN EAGLE F.F. I'M NOT CONVINCED THAT EITHER ONE OF THEM ARE EXTREMELY RELIABLE. DOES ANYONE HAVE EXPERIENCE WITH AN ACCURATE FISHFINDER?

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FISHIN ROD

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Your question about a depth finders accuracy is a "can of worms". The most common we get from customers about sonar units is "will it show fish". The only answere we can give is yes and no. Sonar in theory is a very accurate device, the confusion on accuracy comes from differences in reading the display. Any sonar unit can show bottom structure and fish in the right conditions.
Without knowing the exact types of units you are using and the way they are set up I will go with factory set up. The display on a LCD sonar in auto mode with the fish ID on, can be very flustrating. It will show fish all over the place, but are they really fish? In many cases NO. A sonar unit can not distinguish fish from any other return it recieves. It could take anything from a turtle to a weed clump and put a fish symbol up for it. Auto mode is fine for most people but turn the "cartoon fish" off. Granted the display will be a little boring but at least it is a truer depiction of the bottom.
The sonar tutorial on the Lowrance.com site is a good place to find out the limitations of sonar. The principles stay the same reguardless of what brand you are using.

Rob

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