Are you using the short side of the arena or are you merely waiting for it go by so that you can get to the “interesting stuff”? When I was young I had no appreciation for the short side with its two corners as a gymnastic tool. It wasn't until much later that I discovered how valuable the short side and its corners really are from a gymnastic point of view.
When riding lateral movements many riders follow the FEI rule book that defines specific angles for the shoulder-in, haunches-in, or half pass. There are often heated debates about whether lateral movements should be performed on 3 tracks or on 4 tracks. These riders are discussing the finished product without considering the road that leads to it. And they are not thinking about the gymnastic considerations that play a role in this.
