Two winters ago in December at night we were catching them on the flats across from Jamestown at night on DD22s. Fish were very nice running 15-20 pounds. A friend of mine used to fish it alot and has caught some 30+ pounders fishing at night in the winter. He isn't able to do it now but when I went with him 3-4 years ago we caught em on little macs on the flat mud/gravel banks mostly on the main lake but some in the creeks also (Beaver or Otter mostly). Haven't been in a couple years now and I realize that the bigger ones are very hard to find now but I hope this helps if you go give it a try. Please post a report if you do.
Thanks and Merry Christmas all,
Tim