Agreed, I know a couple submariners who told me they'd tie a string from one side of the room to the other. As they dove the string would begin to droop and loose tension, a lot of tension.
Makes my head spin just thinking about the possibilities, which I'd be doing if I were down there...
Interesting you should mention that. I learned a few days ago that while the ISS at large is kept at 1ATM, the spacesuits they use for spacewalks are only pressurized to a fraction of that (if you pressurize a suit too much, it becomes too balloon-like to easily move). Because of this astronauts/cosmonauts have to spend several hours before each space-walk breathing pure oxygen so that they don't get the bends.
That degree of preparation before every spacewalk would disturb me to some extra degree I think. If there was a problem, it's not like somebody else could just hop into another suit and come help you.
All of this does make for a long day. Even though the spacewalk may only be 6 or 7 hours, entire day with preparations and clean up afterwards is exhausting.
Reminds me of this part of Astronaut's training: Anechoic chamber [1][2][3].
‘In the anechoic chamber, you become the sound.’
[1] http://www.dailymail.co.uk/sciencetech/article-2124581/The-w...