bigfish,
The higher end units will give you much better resolution but with some tweaking you can get your unit to read much better, there are a few things I do each and every time I hit the water.
First always check your transducer, they seem to get bumped around while trailering and the angle may be wrong, I like for the transducer to be angled just a tad from the front to the back with the back a little lower than the front, each and every boat is different because of the angle of the transoms or ribs or chines on the bottom, most times when people are not getting good pictures on there unit it is because the angle is incorrect.
Second take a wet rag make sure it is wet and wipe down you transducer, it is amazing what those things will gather on the bottom side when you travel down a highway and if it is mud or dust and it sticks to the face of the transducer then when the crystal vibrates inside and sends out that sound wave that dirt or dust will redirct that sound or block it then you see these weird echoes on your unit. if you use a dry rag then you may scatch the surface of the unit and that will change the sound pattern.
Remember when you here that click sound out the back of the boat the sound goes down to the bottom bounces and returns back to the unit then it is processed and the picture is painted on your screen, happens thousands of times, anything that gets in the way is painted on the screen and that includes sticks, leaves, air bubbles, grass and fish and turtles and anything else that swims or crawls under your unit.
Time on the water and trusting what you unit is telling you are great to boost your morale, marking a fish and then anchoring down and catching that fish is one of the greatest thrills you can have..................Doc
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