Frankly, most fishermen spend the majority of their time not catching anything. That includes me. The important question during these slack periods is this: Are the fish down there just not biting, or are there no fish present at all?
To answer this question I made some GoPro camera housings that could be sunk to the bottom in likely spots. Then I would fish around the site to see what I could catch, and check out the video later. Frequently I would catch nothing, and the cameras would show the area to be devoid of fish. However, on occasion I would catch a few – and on these trips the videos did generally reveal lots of fish. Usually more than my catch would suggest.
The following video shows some fish from the Lake Geneva flats area in late summer of 2019.