Quote Originally Posted by zekepa View Post
From the last side imaging picture in 5.3 ft of water my guess is that there was a 2 to 4 inch chop on the water that the boat is floating on causing the wavy lines in the water column. The line on the left is probably from the trolling motor being down causing a slight disturbance in the water that you are being shown a very detailed sonor return from using 1070 Khz frequency. you could take a tape measue and measure apx 2 ft to the left of where the transducer is mounted to see if there is anything that could cause disturbance in the water, my guess is the trolling motor shaft at the front of the boat.

Side and down imaging aren't really designed to work well when sitting still regardless of manufacture.
Is movement required for side imaging to work? – Humminbird (johnsonoutdoors.com)
Fish Finder Mistakes: The Top 5 Mistakes (Most Anglers Make) (catfishedge.com)
Good point on the TM, I’ll do some more testing for that. That’s crazy sensitive if it’s causing that line from 18ft away.

Also, just to add to my post here, I’ve been fishing and using electronics for over 40 years (fish finders for probably 25-ish years) and I’ve never seen wavy images this pronounced/bad. It’s just mind boggling that this sort of thing is “normal”. These units are on everything from yachts to kayaks and I’ve never heard of or seen this issue. It’s driving me nuts. This was/is a huge purchase for me personally and I just expected it to work as expected.