In reality, no-fail fishing strategies don't exist. There are too many unpredictable variables, such as atypical weather and early or late returning salmon, which make up the equation that can't be precisely predicted. The only certainty about the Kenai and Russian Rivers is that they are very popular and how well you avoid other anglers will have a lot to do with how successful you are. Here are some ideas that will increase your odds of meeting more fish than fisherman. Fish the odd hours.
Human nature being what it is, most folks tend to fish like they work.
Use this to your advantage. I believe that a lot more salmon, on a per fisherman basis, are caught before eight o'clock in the morning. Look for the guys that are having breakfast about that time and are ready to turn in for a three hour nap. They'll usually have caught more fish than a similar guy who'll be casting into the sun all day long. If you can, fish during the middle of the week.