Never have experienced this phenomenon. I have had great fishing on every trip I have ever been on. I'll tell you one thing though, there have been lots of trips where the catching wasn't great at all. We will never figure out a sure fired way to always garuantee positive results. And if they do, don't tell me. I like waking up with butterflies in my gut, wondering if I am about to have the best or worst catching day of my life. Every trip should be like Christmas morning. Enjoy them, they are fewer than we realize.