Hit the ice with my daughter, yesterday. Caught about 20, and kept 13. Heading back to the ice now. I too use "an old fashion" box/sled. It has a lantern in the end with plexiglass to shine light on te hole. Had it for years. Will post pics.
We also used my hunting blind yesterday as a wibd block. A small heater and it was quite nice. Good luck and be safe fellas!