If your xducer is 1' below the surface of the water then the fish at 4' are actually 5' below the surface. Most modern DFs have a setting you can compensate for the xducer depth. Its called keel offset or transducer offset.
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If your xducer is 1' below the surface of the water then the fish at 4' are actually 5' below the surface. Most modern DFs have a setting you can compensate for the xducer depth. Its called keel offset or transducer offset.
Fair Winds and Following Seas
Bill H. PTC USN Ret
Chesapeake, Va