From my understanding they tend to suspend and are roamers in schools. Almost like crappie in some ways because they eat plankton and shrimp, rarely if ever anything else like another fish. They are hard to find mostly because they roam so much. Being over the channel helps. In Blue Mesa, I think the best spot would probably be Iola Basin a few miles away from the inlet, over the Gunnison Channel in about 30 feet of water. These are just guesses based mostly on from what I have heard about kokes, as I have never targeted them through the ice. I will stick to rainbows and lakers.
Tyler