Google Missouri Trout Hunter...There is plenty of good info on lure, fly, and bait fishing for trout on his page. Think the Big Thompson has some special regulation water. Read up on it before you go. Its not always the case, but rainbow trout like small flashy stuff and bright colors, plus they will feed anytime. Small brown trout behave like rainbows but they like more natural colors. Big brown trout...those over 15" or so like to eat other fish and tend to feed during lower light periods. Think minnow lures. Good luck!