Although done in gangs, it was individual labor--I've done it. We had handles with metal frames which made it easier than kneeling, but still serious work. Any rhythmic shanty of a good tempo would do. The rhythm of "Banks of Newfoundland" would serve well, and I can't imagine why it wouldn't count. "Wrap me up in my Tarpaulin Jacket" is too dirge-like and suggest an altogether different application for holystones.

A