Look for the jagged ice and any sort of bottom content change, small groups rock and gravel. Most importantly get away from the crowds, go beyond the road. Caught fish in 14' of water during the day using a 1/8oz and 1/4oz vmc rattle spoon tipped with a minnow head (glow hot perch). Once the sun went down they switched to live bait bite. Utilize dead sticks and rattle reels with a mix of fat heads and shiners. Don't forget to keep jigging and ringing the dinner bell. They would often come in and check of the spoon and hit the live bait.