any idea what this is?

i see this all over my lake.cant feel it with a jig?..so i dont think is brush.ideas?

Probably shad. Maybe sand bass or catfish in the mix feeding on them

It's not brush...if it was, the yellow and orange colors from the bottom of the lake would be coming up solid into the brushpile graphic area. Most likely some bait fish of some type.

You can adjust your sensitivity, colorline, noise rejection and ping speed to clean that image up a little.

A brushpile on 2D will look like the linked image below...note teh orange and yellow coming off the bottom and into the hard structure:

2D Brush

thanks