Quick disclosure, This is a long read, Im brand new to fish finders, i have no idea what im doing lol
I have a canoe with a trolling motor with a lowrance trolling motor mount. i also have a separate 12v battery for the fish finder.
I tried my fish finder on a local pond that wasn't more than 10ft deep. the pond was covered in weeds. all i could see was blobs and lines over the screen. It seemed like it was telling me the right depth.
I took the fish finder home, took it off the trolling motor and put the transducer vertically on a floating device and through it in the pool in my back yard. Less blobs but still blobs and lines in crystal clear pool water.
I call lowrance tell them my problems, they tell me to send the unit back, 2 weeks later they send the unit back and say theres no problem.
I retest the fish finder in pool again , same problem.
I bought a lowrance hook 4 with the same transducer as mine, swap out transducers and retest. Same problem
I try the hook 4 with its transducer, the same problem. blobs and lines
I have my settings to shallow and sensitivity to auto. i tried different frequencies and surface noise settings, still the same
Im attaching photos and videos
Videos
https://goo.gl/photos/6i2KU1ApnT94yxWh8
https://goo.gl/photos/TruVr9sdsBrxfUVw8
https://goo.gl/photos/KyeUdQpPfc7aGB3g7
https://goo.gl/photos/Ltkvaxbv8rJ3Qc3d8
Please help