This article discusses the advantages of the vertical stack defense in ultimate frisbee. It explains that this type of defense is beneficial for the traditional end-zone defensive style, as it can be used to contain and slow down an offensive team. The article also explains that by using the vertical stack defense, it can create more opportunities for turnovers, and can also frustrate the offensive players. In addition, the article outlines the different elements of the vertical stack and how they can be used to improve overall defensive play.