I am still new to the diving world, especially compared to some of the divers I see on this site. My question, however foolish it may seem, is this: How do the divers that don't use a BC function properly? The point being without a compensator at the beginning of a dive would you not either be too heavy with a full tank of gas to say at 60' crash into the bottom? Or at the end of the dive be too light to stay at your safety stop with the added buoyancy of a lighter tank and the wetsuit expanding again? I know I am probably missing something here but, am always willing to learn. I have also noticed that on the bottom I use it (BC) to hover without effort and make my air last longer because of the lack of exertion thereof. On another note : I did not ask this to start a fight over BC's versus BP/W. ![Confused :confused: :confused:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)