Marek K
Contributor
I can clear the mask fine, but when I take it off, I start to immediately breathe through my nose.
There's a nasal "stop" you use when breathing through your mouth. Not the glottal stop, which stops all air going down your trachea; but a stop at the back of your nasal passages above your throat.
I, for one, don't usually close off that nasal stop when breathing normally through a regulator with a mask on. That may be why I still have a small tendency to breathe out through my nose and fog my mask.
And that's why you and I tend to keep breathing through our noses when our masks come off.
During a mask drill, it's indeed not a race; you can't do everything at the same time. I think you have to systematically establish the highest-priority thing first. Then move on to the next-highest, and so on.
First priority for me when my mask comes off is to establish breathing through my mouth -- it's unlikely I'm going to recover my mask and clear it all on the breath I happen to have. That means closing my nasal stop and making sure I'm breathing well, before I do anything else.
By the way, I'm one of those who don't like to open their eyes underwater. I'd certainly open my eyes if I needed to hunt for my mask.
Everything after that can be done slowly and deliberately, in whatever order you want. Because I use a neoprene strap, I happen to find it's easier to put the strap on first, then the mask. But once my breathing is established, then it doesn't make any difference how long that takes.