Was doing this the other day on south bay for crappie. You could see your minnow on the screen down 18ft in 28 fow. A few pixels bar would seperate from the bottom and move upwards towards the minnow, pick up your rod wait fish pixels merge with minnow pixels you feel the tap, set the hook, crappie on ice. Its all in knnowing how to set up your LCD for ice fishing. My graph also has a flasher but I never use it I understand the graph picture better.