I use ht ice riggers, a rod holder that has a flag trip clipped to the line. Nothing to attach to the rod or bobber stop on the line. They also have a tip down version. Many people make their own tip downs, it’s just something to hang your rod on, but you need to find the balanced point on your rod to attach the hanger to. I just don’t like how they aren’t as visual as a flag being up. Biggest issue with using these is the holes freezing up and stopping the line from freely going down the hole.