Final answer:
PWCs steer most poorly under the condition of no or low forward movement. Once a PWC starts moving forward at a higher speed, the water flow over the control surfaces increases, allowing for better steering control.
Step-by-step explanation:
PWCs (Personal Watercrafts) steer most poorly under the condition of no or low forward movement.
When a PWC is not moving or moving at a very slow speed, its steering becomes less effective due to the lack of water flow over the control surfaces.
To better understand this, think of a PWC as a car. When a car is stationary or moving at a very slow speed, its steering is more difficult because there is not enough air flow over the tires to provide the necessary traction for the steering mechanism to work effectively.
Similarly, when a PWC is not moving, it doesn't have enough water flow over its water jet to effectively steer.
However, once a PWC starts moving forward at a higher speed, the water flow over the control surfaces increases, allowing for better steering control. In this condition, a PWC can turn more easily, change direction quickly, and respond to rider input more effectively.