Which is a recommended practice for scanning while roving?

The recommended practice of including frequent look backs while scanning when roving is important for ensuring comprehensive safety coverage. This technique allows lifeguards to actively monitor both the area directly in front of them and the areas they may have just passed. By frequently looking back, lifeguards can identify any potential issues or emergencies that may arise out of their immediate line of sight, such as swimmers in distress or other safety concerns that may not be visible if they were only looking forward.

This practice enhances situational awareness and helps maintain a thorough vigilance over the environment, which is crucial for preventing accidents and ensuring the safety of all patrons in the aquatic facility. It promotes a proactive approach to supervision, as lifeguards can respond more quickly to incidents that might occur behind them.