A crosspoint is the point where the flight path of a poi intersects itself. Playing with crosspoints is a way to observe, understand, stabilize, and interact with the poi. 3-beat weaves when performed randomly don't look like anything from the front, but by stabilizing the crosspoints it can become a beautiful helix. Crosspoints can also be used for spotting when turning and whirling in virtually any pattern. (It is easiest to work with crosspoints if you have light emitting poi!)