Pool Area:
Kassie paces herself as she counts mentally how many strokes it takes her to reach the other end of the pool. When she reaches the other end, she turns around pushes off the wall, and starts swimming towards the other end. She makes sure to take into account how far she glides before counting her strokes again. She knew the wall of the pool was on her right-hand side this time and that the rope that separated her from the other lane in the pool was on her left-hand side.