You must have a presence of Zebra mussels do you? I've fished Lake simcoe in Ontario and water is pretty clear as well. Although every lake is different I would say anywhere from 25 to 65 feet of water would be fine. Talk to some local fisherman? They tend to move up shallow in this part of the country late in the winter and we target them in less than 30 feet of water right on bottom or as close as you can get. With their mouth being shaped as it is, they definately do alot of their feeding on the botom of a lake, mostly small crustaceans such as snails, etc. People do well with small shiners, and small pieces of fish as well. Small hooks should be used as well because of their tiny mouth. Most guys around here fish them with pickeral eggs and sucker meat. My favourite lure to use is the williams whitefish/