Bamboo is harder to see on side imaging. I throw a marker out when I put a top out and then gps the location after I have been over it a few times to see where the most brush is in relation to the marker. But bamboo looks like a "ghost" or school of Shad because the bamboo has hollow segments that contain air and SI picks that up and sees thru it.

Down imaging will show you every limb, twig, or fish. But if you spend much time trolling over it, it seems the fish either sink down in the brush or will just move away from the top.

The new panoptics unit are showing people how shy Crappie really are of trolling motors and boat noise. They are seeing to catch the better size Crappie in a brushpile, you need to run the trolling motor on a very low setting and use a long jig pole, I have used 12' poles for years for that reason.