Many times as a coach, never as an umpire.
Though I have
erased a few lines before a game that were improperly drawn!
I can recall only two times that I did any "ground work" before a game I was umpiring. This was in local leagues where everybody pretty much knew everybody else. Heavy rain before each game had the fields looking swampy, and I pitched in with a rake and a bag of diamond-dry to allow the games to be played.
Of course, most of my work was concentrated on the area directly behind home plate!
