and if possible, carry one of those locator devices.
We need to change this attitude. It shouldn't be a question of "if possible," it should be something that every diver sees as vital to their safety, and a necessary part of their kit if they are planning on diving in open water, regardless of how benign they may think conditions are. We spend hundreds if not thousands of dollars on all sorts of gear for our sport, this should be part of that expenditure.