@xssfox and make sure someone knows where you are going!At least set out your intentions, it's good having contacts on your PLB register that can tell the RCC "Oh yeah, Alex was doing walk x from a-b" because they will absolutely try to contact them upon an activation.Also when you have a PLB make sure you keep an eye on it's battery expiry date and "they are extra weight" isn't an excuse, they aren't that big at all as you can see from mine.Try to keep it on your body not in your bag, because if you have a whoopsie, you don't always end up in the same location as your bag. Same applies if on the water (separated from kayak for example on open water off the coast heh...)An iPhone with SOS mode doesn't replace a PLB either.