Quote Originally Posted by RCC View Post
Name:  shad and crappie32.jpg
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Thanks rnvinc. I wondered what the lines were. The lines are 2 poles out each side long lining cranks. The return is the line itself.The cranks were far behind. I was thinking it was some kind of boat interference. Let me try this again with a little larger pic. This one should be a zoom of the same area with a shad ball and schools of crappie.

Attachment 96261
I would say you are correct that the SI beams are picking up the line as it passes thru the thin slice sonar beam...

I'm guessing you may be using some type of superline... I think a superline or braided line would show a good reflection like your image is indicating...
Rickie