There are times when you can’t do anything wrong with streamers. These are the halcyon days when the retrieve, fly color, and water depth appear to have no impact on success. Whatever you do, it seems the fish jump all over it. These moments are often the subjects of our favorite fish stories, but unfortunately, they are few and far between. The rest of the time, the fish themselves can be stubborn, and the fishing conditions can offer myriad challenges. Sudden rain events can turn the water muddy. A low-pressure system or a sudden drop in water...