Tracy, in an earlier thread mentioned that he's kept a log of his stealheading. It hasn't worked for him yet but I predict it will help him big time in the future. Detailed logs are a great idea. My brother's been doing it for about 30 years and his documentation is tremendously useful, trouble is it's my brothers documentation. It's perfect for him and his experience but I don't have one and I'm fishing alone most of the time. How useful is historic data on where, when, who was along, rod/line setup, water temp, fly, flows, run, spot in run...? Can we keep it all in our heads? I keep some but when it comes to comparing variables I'm lost. How can you lose if you keep this type of log? You can only learn and improve your chances if you keep track of what's happened before.