May only be of interest to me, but if you're interested I filed an enhancement request to change the action required to disengage the water lock. Getting fed up that's it too easy to disengage as it only requires the crown to be turned. Keeps disengaging when I wash the watch etc. Strange considering Apple encourage you to clean the crown under running water. I've suggested that the action is more "deliberate", i.e. hold the side button and turn the crown or press the crown whilst turning it, or "something" a bit more deliberate/intentional. If you're a Dev and agree, may be worth filing something similar.