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958cDI 'bird issues


lawman

Question

I have a problem that is apparently shared by other Humminbird owners and am looking for the answer. Anytime I go over 7mph I lose bottom in the sonar mode. The down imaging is good at any speed. I have had the installer guy re-position the ducer but all I got then was an incredible spray of water hitting my outboard motor when underway. Any ideas?

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Is your boat aluminum or glass? If glass a shoot thru transducer and y cable will cure it and also allow you to mount that expensive ducer up higher and out of harms way when on plane. My side and down imaging go away around 10mph sonar reads fine at 70mph with thru hull.

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