Thank you - I was just about to point out some of that. The reason that the flocks are tight is because the separation "force" is normally computed as a repuls

Thank you - I was just about to point out some of that. The reason that the flocks are tight is because the separation "force" is normally computed as a repulsion between a target boid and all other nearby boids individually, not vs. the center of mass of all nearby boids.