Shug

I'm fairly new to LOU so please forgive me if any of my questions have been discussed many times in other threads. Please feel free to link helpful threads if that's easier. I know migration varies from year to year due to food, weather, and water temps, etc. so I'm just looking for averages based on any ones personal experiences. When mature kings start their spawn migration, what time of year do you normally find them in 50-120 feet of water. At that point will they still be actively feeding in 50ft or at what point do they start to shut down as they begin the staging transition?