.....it is very easy to dive in threes......but you have to have a plan first. As been mentioned...leader and the two behind act as a usaul buddy team. Obviously ( at least to me) the leader must maintain contact with the other two behind him.
Bottom_Sucker, his wife and I have done numerous dives in just such a manner.
Bottom_Sucker, his wife and I have done numerous dives in just such a manner.