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Side Scanning Sonor/Fish Finder

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Side Scanning Sonor/Fish Finder
So I have a technical question about side scanning sonar/fish finders, I troll for trout and koks that early in the year are close to the surface and move deeper later in the year. As you troll along, the fish move around away from the boat. How does the beam on the new fish finders work? Does it go 180 Deg with the boat (like Humminbirds video) or do they have angle towards the bottom. Logic tells me they are angled towards the bottom but that is why I am asking.
Subject Author Views Date
Thread Side Scanning Sonor/Fish Finder RJD007 3789 Apr 22, 2017, 6:43 AM
Thread Re: [RJD007] Side Scanning Sonor/Fish Finder
wiperhunter2 3658 Apr 22, 2017, 8:04 AM
Thread Re: [wiperhunter2] Side Scanning Sonor/Fish Finder
RJD007 2353 Jun 26, 2017, 12:56 PM
Post Re: [RJD007] Side Scanning Sonor/Fish Finder
WiperMac 2340 Jun 26, 2017, 2:17 PM
Post Re: [RJD007] Side Scanning Sonor/Fish Finder
wiperhunter2 2218 Jun 28, 2017, 7:04 PM