Have you ever noticed that the first few feet on Hummingbird and Vexilar sonars always seem to have a lot of interference? I cant speak for Marcum flashers as I have never used one, but I always seem to have some trouble getting a good reading right below the puck. I've spent 95% of my time ice fishing jigging close to bottom only raising bait to suspended fish that move in on the sonar. The last few weeks I'm really beginning to rethink my approach.
We spent the morning fishing and we were just slaying perch off the bottom. They were extremely small perch but they managed to hold our interest for a few hours. Wondering where the hell all the panfish where was kinda mind boggling. Deep study of my Hummingbird led us to believe that there was something moving around in the cloudy first few feet.
We peered down the hole and we were just straight dumbfounded at the giant school of sunnies cruising just a foot below the ice. Needless to say, the flashers were turned off, the windows were closed, and we spent the rest of the day in a dark shack sight fishing just under the ice.