Reading through the four pages of this thread was a treat - but I'm amazed at how many CFAs do not give clear guidance to their referees. And how a referee can be expected to make even semi-accurate calls on offsides is beyond me... sometimes the ball can be lumped from the defending teams' corner flag to ten yards inside the opposition half, how the hell are referees expected to make a call in such a situation?
At Kent FA, we are advised to use CARs for:
Ball in/out (throws, goal kicks, corners) and which way
Offside
Goalkeeper off line at PK
Feet offences at Throws
We are also generally told to not allow CARs to offer an opinion as to fouls, however, I generally tend to give CARs an option to put their flag up if they spot something, mainly because I know a lot of them very well (been reffing the same 12 teams from a league (most of the time, at least!) for around 18 months now).
My pre-match talks will generally go as follows:
"Good afternoon, thanks for volunteering to help out today, much appreciated.
As I'm sure you guys already know, we're instructed to give these talks before every match and so I will just give you a quick run through of what I will be requiring your help with today.
Please try to stay in-line with your 2nd last defender at all times if you can, this way you're best positioned to spot offsides and you should avoid most criticism about not keeping up.
Throws, if whole of the ball is over the line please flag which way - if you are unsure please raise flag straight up and I will go with my instinct.
Offsides, please remember the player must be active, he must have touched the ball or be making a clear effort to get to the ball, or have interfered with another player clearly... just because he's in an offside position doesn't mean he's committed the offence. If the ball has run through to GK etc please don't flag, no need to unnecessarily stop the game!
Corners and goal kicks, corner is a straight flag downwards towards the corner arc, goal kick a straight flag along the 6-yard line please.
And finally, fouls, generally I will pickup all fouls and make the decisions, however if you spot something off the ball or something where you are much closer than I am, or I am distracted by a player down or similar, please feel free to flag and I will come to you for clarification.
Any grief from parents players or managers please put your flag up at ball out of play and give me a shout.
Any questions?
Cheers lads, enjoy the game!"