Group diving can be tolerated if the rules are clear to everyone. However large the group, the key is to keep away from the clump.
What I try to avoid at all costs is odd man out groups. There is a reason why buddy diving is singular. Task loading with only one diver to look after is significantly lower.
What I try to avoid at all costs is odd man out groups. There is a reason why buddy diving is singular. Task loading with only one diver to look after is significantly lower.