Alan Lewis — Irish Athlete born on June 01, 1964,

David Alan Lewis (born 1 June 1964 in Cork, Ireland) is a former Irish cricketer and rugby union referee. He is also an occasional media commentator on Irish cricket. His father, Ian, and daughters, Robyn and Gaby, have also played cricket for Ireland,.. (wikipedia)

The scrum and the tackle are the two really contentious areas of the game. If you get those two aspects right, most rugby matches will work in your favour.
If at first you don't succeed, get a bigger hammer.
Coaches do so much research about a referee because they believe refereeing is such a crucial part of the game that the result may hinge on what we say or do. They probably know more about me than I know myself!
The objective of a referee is not to get mentioned. I tell a lot of young referees that not being mentioned is king. If you can achieve that, that then it has been a pretty good game.
But then southern hemisphere teams are more skilful than their northern hemisphere counterparts, which means games can be easier to referee.