Additionally- the depth, as long as it’s over the tallest man’s head is irrelevant. I never saw anyone try it, but if you were to use the bottom to ‘rest’ by contacting it in any way, even if only momentarily, you would be assumed to have ‘rested’. You’d probably have been made to get out, run outside, do some bends and MFers in the sun, then run back in and start over again. Only now, you’re starting out tired.
I think I tread water fully clothed for fifteen minutes IIRC, and then was taught to get out of various articles of clothing and make flotation devices out of them while treading water. The key is to keep them good and wet, they’ll retain more air that way.
>The key is to keep them good and wet, they’ll retain more air that way.
The water’s surface-tension[?] forms a nice seal there in the clothing’s weave-gaps, so that makes sense.