It's 270' by 90', but not square. So think of battling on a football field that's rounded at each end. Enough room to battle, just don't be on the water with no bbs when the battle gets close to the end and the stronger fleet starts chasing. There is no place to run.
You guys are spoiled. I wish we had the luxury of battling on a such a spacious pond. A BIG pond for us is about half that size.
The part of Cle Elum we use is about 60x100, and no one ever really tries battling on the far side. Swan Creek and Coal Creek come out around 60x70 Hovey's little pond was at best 25x40