During which part of the dive does the most difficulty in guiding often occur?

The most difficulty in guiding often occurs during the descent phase of a dive. This stage is critical as divers are transitioning from the surface to the underwater environment, which can introduce several challenges. One significant aspect is maintaining proper buoyancy control. Divers may struggle with equalization or have issues managing their descent rate, especially if they are anxious or inexperienced. As a guide, it is essential to monitor the group's descent closely, ensuring that all divers are properly equalizing and descending at a safe and consistent pace.

Furthermore, during descent, visibility can be limited, and divers might become spread out, making it harder to keep the group together. The guide needs to focus on ensuring everyone is comfortable and correctly positioned, which can be quite demanding.

While the ascent, surface interval, and briefing are important phases where a guide must also be attentive, the descent typically poses unique challenges due to the physiological effects of pressure changes and the necessity of maintaining group cohesion right from the start of the dive. Focusing on a smooth and well-managed descent can establish a positive experience for the divers and set the tone for the dive to follow.