Put it in their face and jig it. Pike wont seek out food if they are turned completely off. Sometimes a dead minnow just under the ice will do it too. We were watching two fairly large northerns today with the aqua vu. We fished the same spot for around an hour and neither fish even moved an inch. They were hanging about three feet off the bottom of the ice with their head slightly higher than their tail. We are in slow period for pike, and that cant be helped. The hottest part of the summer and the dead bottom of winter are usually pretty tough.