What feature requirement must be fulfilled regarding backward rotations before a pi rotation?

The requirement that additional backward rotations must precede the pi rotation highlights the importance of demonstrating technical skills and complexity in choreography. In synchro skating, the integration of backward rotations before executing a pi rotation showcases a team's ability to transition smoothly between elements within the program.

This requirement is crucial as it emphasizes not just the execution of the pi rotation itself, but also the overall flow and organization of the routine. Teams must utilize these backward rotations to build momentum and maintain alignment, which are essential for achieving a high level of synchronization and artistry.

By incorporating multiple backward rotations before the pi rotation, teams can create a more dynamic and engaging performance. This contributes to the evaluation criteria judges use to assess the technical merit and artistic impression of the routine, thus serving as a fundamental aspect of synchro skating choreography.