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How essential is a fish finder?
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<blockquote data-quote="Jonboat Jerry" data-source="post: 235652" data-attributes="member: 6334"><p>Great info guys. Also, when you find that used unit on Craig's list, do some research on the transducer as well.</p><p></p><p>A 20 degree beam will read the bottom area about 1/3 of the depth.</p><p>A 60 deg beam reads an area equal to the depth.</p><p>A 90 deg beam reads an area twice the depth.</p><p>Each has a specific use and I encourage looking them up on the different sonar forums. </p><p></p><p>For us flat's fishermen, these are not going to be of much use in 2-3 feet of water. This is where</p><p>Side scan (humminbird) and structure scan (Lowrance, Sitex and others) have the advantage of showing</p><p>up to 150' on either side. I have to add that all this width needs a large screen ($$$)to see all that data.</p><p>Jerry <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" /></p></blockquote><p></p>
[QUOTE="Jonboat Jerry, post: 235652, member: 6334"] Great info guys. Also, when you find that used unit on Craig's list, do some research on the transducer as well. A 20 degree beam will read the bottom area about 1/3 of the depth. A 60 deg beam reads an area equal to the depth. A 90 deg beam reads an area twice the depth. Each has a specific use and I encourage looking them up on the different sonar forums. For us flat's fishermen, these are not going to be of much use in 2-3 feet of water. This is where Side scan (humminbird) and structure scan (Lowrance, Sitex and others) have the advantage of showing up to 150' on either side. I have to add that all this width needs a large screen ($$$)to see all that data. Jerry :) [/QUOTE]
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