Thinking about learning how to fly fish or want a guided fly fishing trip? Prime Fly Fishing on the Cache La Poudre has Started. We are almost booked for July. We have just a few days available. At this point in the game its best to call Liarflies Lead Guide J.Pearson # 970-294-5414 directly find out which dates are available. Remember this Liarflies LLC is one of two outfitters in Colorado that can legally guide on the Forest Service sections of the Cache La Poudre.