A good time to identify divers who may have difficulty is _____.

Identifying divers who may have difficulty during the pre-dive phase, while suiting up, is crucial for several reasons. This period allows the dive leader or divemaster to observe divers as they prepare for the dive. It is an excellent opportunity to assess their physical readiness, gauge their comfort level with the equipment, and notice any signs of anxiety or lack of experience.

By engaging with divers during this time, instructors can build rapport and offer assistance or additional explanations if needed. This early recognition is vital because it provides a chance to address any concerns or deficiencies before they enter the water. Pre-dive preparation is also a moment when divers are likely to voice any uncertainties they may have about the upcoming dive, making it easier for the divemaster to accommodate differing skill levels and ensure everyone's safety.

In contrast, identifying issues during the dive briefing or after surfacing may limit the ability to intervene effectively. For instance, by the time divers are in the water or have completed safety drills, it may be too late to make adjustments. Therefore, the pre-dive phase is the optimal time for such observations and interventions.