Why does the depth change on the finder?

[Baitfish55]

That's most likely fish. That's the sort of thing I look for while perch fishing. As they hug the bottom. Sometimes watching the depth is the best indicator that the perch are moving through. When I notice the depth change I start jigging just off bottom related to the graph. Sometimes they come up. When they don't I drop to the bottom of the lake and work the jig where I can't see it on the graph (fishing blind). I haven't seen a scanner or flasher that sees a lure 6in.or less off the true bottom. Try this watching for slack in your line notice when your lure drops out of sight on the scanner as apposed to when the lure actually hits the bottom.
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