OP
saltydog7seas
Registered
Our instructor said that the theory behind the 60 ft swim is that since we are recommended to only go to a depth of 60ft. if something happens (out of air) at least we can swim to the surface on one breath. We did all of the skills you mentioned and also for our last pool session he gave us blacked out masks with a leak and made us follow a line all throughout the pool over under and through a lot of different obstacles. Some of them were very tight squeezes.