The guests decide where they want to surf based on the information provided by the surf-guide, who advises the group about the waves available on that particular day considering the swell size and direction, winds, tides, etc.
The surf-guide’s job is to satisfy the group preferences. If you are not happy about the surf just let the surf-guide know about that. He is always concerned about finding the best surfing conditions for you as he really wants you to be stoked with the surf and comeback next year.