I don't think you can "master" it in OW, but I do think that people ought to be taught that they need to continue to practice these skills, no matter how distasteful they are. I don't like ice water in the face any more than anybody else does (and I utterly LOATHE being deprived of my vision) but I make myself do this periodically, so that I know that I can.
I had a buddy once have his mask flood on about his 40th dive. He completely lost rational thought and took off for the shallows . . . Luckily, he didn't bolt to the surface, but it was still a very traumatic experience for him and for the two of us who watched him flee and couldn't catch him. He had certified in warm water, and had never done a mask flood and clear in Puget Sound. He was appalled at his reaction, and immediately went to work fixing it.
Masks don't always stay sealed or in place. If there is a teaching point from this, it's to remind all of us that we need to be sure we are calm and competent in the face of a mask full of water, or a lost mask.
I had a buddy once have his mask flood on about his 40th dive. He completely lost rational thought and took off for the shallows . . . Luckily, he didn't bolt to the surface, but it was still a very traumatic experience for him and for the two of us who watched him flee and couldn't catch him. He had certified in warm water, and had never done a mask flood and clear in Puget Sound. He was appalled at his reaction, and immediately went to work fixing it.
Masks don't always stay sealed or in place. If there is a teaching point from this, it's to remind all of us that we need to be sure we are calm and competent in the face of a mask full of water, or a lost mask.