Ok, I’ll admit it. It was a stocked pay lake loaded with flatheads, channels, carp, burbot, and trout (we called the flathead “shovelheads” in OHIO). We would pay $5 to fish for 12 hours and $1 to get in the big fish contest. This went on for years between the ages of 13-16. My mother would drop us off at 6:00 p.m. and pick us up in the morning!
And yes, we would catch flats on slip bobbers. We’d just set the stop so the stink-stuff would be a foot off the bottom. If the channels were snapping we could catch then just a few feet under the surface.