Where i used to live one assessor hid until full time. i wonder if he hid when assessing his famous son?I can believe it with the old days - it happened quite a bit. Although some clubs still consider that Referees should not know that Observers are present at a game, I think the opposite. Many games when Assessors turned up with the Referee not knowing an Assessor was on the game, they discovered that the Referee appointed to was no longer on the game, or hadn’t turned up, so was a complete waste of time & effort.