I expend some work keeping my pegs pushed in, to avoid the 24-hour catastrophe of having a peg spin loose and its string de-stretch. So, it's a somewhat frustrating that violin/viol/viola/bass players never seem to worry about this issue.
While tuning, they turn the peg with one hand and bow with the other hand. I have never seen them put down the bow, brace the violin with the right hand, and push in a peg with the left hand. And I have never noticed their pegs spinning loose, despite the dozens of symphonies I've seen with dozens of string instruments in each symphony. To get on or off this list see list information at http://www.cs.dartmouth.edu/~wbc/lute-admin/index.html
