I was on big lake last year looking around by some of the rigs and you could see the shell under and around the rig legs. Some had more than others and also saw several ditches dug buy props or something dragging the bottom in 4 or 5 foot of water. Wish I would have saved the images. Some brands you have to add different transducers for side scan. The Navionics card has a ton of detail not on factory hummingbird mapping. I use mine on side scan to find the edges of the moss, stump fields and drop-offs at the lakes. I have my transducer mounted on bottom of jack plate and does not work at high speeds. Trying to keep from knocking it off in Toledo Bend.
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