What must a lifeguard use during a rescue to ensure proper technique?

A rescue buoy or tube is essential for lifeguards during a rescue to ensure proper technique. This piece of equipment is designed to provide flotation and support, allowing the lifeguard to reach and assist a distressed swimmer more effectively and safely. By using a rescue buoy or tube, the lifeguard can maintain their own buoyancy while ensuring that the person in distress is supported, which reduces the risk of both the lifeguard and the swimmer sinking during the rescue.

Additionally, having a rescue buoy or tube allows the lifeguard to create a barrier or shield between themselves and the individual in distress, which can be crucial in preventing the panicked person from grabbing onto the lifeguard and causing both to become submerged. This safety measure preserves the lifeguard's ability to manage the situation and provides the swimmer with assistance while remaining in control.

In contrast, while swim fins can aid in a lifeguard's swimming speed, they do not provide flotation for the distressed swimmer. A safety net is not typically useful in water rescues, and claiming that no equipment is necessary disregards the importance of flotation and safety in rescue situations.