This article discusses the importance of pivoting or "breaking the mark" when playing Ultimate Frisbee. It suggests that understanding the limits of marking is essential when playing this sport. It explains the idea of an "active guard" and how it can be used to gain an advantage over opponents. The article goes on to explain how pivots can be used to avoid marking, and also how to effectively use short passes and fakes to gain an upper hand on opponents. Finally, the article outlines how to use these strategies effectively in a game.