Robert Burns said:
What do you say to the teams/specific players.
is there anything you make sure they are aware of?
How do you brief the front row on the scrums?
I probably do it different to many refs I have spoken to.
My pre-match chat with the teams is quite brief. My major interest is to meet the front rows, ensure they and their replacements are suitably trained and experienced. I then explain the engage procedure I will use - breifly and succinctly to them and Captain, Pack Leader and Scrum half.
They have all it done it before, and know what is required. They don't need a couple of chapters from me. I then ask if they have any questions - sometimes this elicits things they are concerned about.
And thats it, takes about a minute. I don't give lectures on staying back 10 at lineouts, staying on feet after a tackle, all the standard bits - they know all this. If they have specific things they want to ask me about then I will answer.
I do sometimes get asked if I will call when a ruck forms and when it ends. I say no, I cannot commit to do that every time - and explain that rucks are very dynamic, it may well be over by the time I have vocalised the call that its begun. I simply say that if you hear me call "hands out" then do just that, if you hear "play on" then you can - if you hear neither use your judgement, I will tell you when you get it wrong!
It would be interesting to know from other refs if they have a different approach to calling the phases.