What is the best ground reference to practice S-Turns?

The best ground reference for practicing S-Turns is a straight line on the ground, such as a road, that runs perpendicular to the wind. This is because when performing S-Turns, pilots need to establish their angle of bank and coordinate turns while maintaining a consistent altitude. A road that runs perpendicular to the wind offers a clear visual reference for alignment and guidance for the maneuver.

When flying S-Turns, the pilot will have a distinct point of reference to track as they roll into and out of each turn. The perpendicular orientation allows for a balanced drift from the wind, making it easier to gauge how much bank is needed to maintain the S shape without veering too far off course or getting too close to the ground. This setup helps to practice wind correction techniques effectively, as the constant reference point provides valuable feedback on the aircraft's position relative to the ground.

A tree line, while it can serve as a reference, may not provide the same clarity and consistent guidance as a straight road does. Other options, such as a lake or field, might not offer the same visual cues that are crucial for practicing the precise control needed in S-Turns. Thus, choosing a straight line that is perpendicular to the wind creates the ideal