What is the first action when performing a high-speed stop?

When performing a high-speed stop, the first action is to reduce the throttle to idle RPM. This step is crucial because it helps to decrease the boat's speed gradually and safely. By bringing the throttle down, you allow for better control of the vessel as it slows down. This initial action aids in preventing loss of control that can occur from sudden movements, making the boat more stable during the stopping maneuver.

Subsequent actions, like shifting into neutral or turning the boat, should only be performed after the throttle has been reduced to ensure that the boat is no longer moving at a high speed, thus minimizing risks associated with abrupt maneuvers while still in motion. It's important for boat operators to prioritize safety and control when executing a high-speed stop, and reducing the throttle to idle RPM is the foundational step in achieving that safety.