I don't do it very often, but I have targeted channel cat a few times. I've caught several when blind casting with Wooly Buggers, but I have also selectively sight cast to a few successfully, using black Buggers or leech type streamers. When fishing clear water creeks, I have seen channel cats start from several feet away and aggressively chase down a streamer. As you discovered, they can be a lot of fun to catch, but they do tend to put in a lot of line twist.
Larry Compton