FISH XXI: Southwest Montana... Days 3 and 4 I spent Day 3 with my old friend John Hoover on the Boulder River. This is a beautiful little stream that meanders through classic Montana ranch lands. We had a sensational trico hatch in the morning. John and I stalked big heads that were loudly chomping the tiny mayflies. At times, it sounded like a bunch of teenagers chewing gum. That afternoon we had some wonderful hopper fishing on an unseasonably warm afternoon.