Kes
I'll Decide ...
I never got the showing both sides of the coin.
Do they really think the referee is using a double sided coin?
Depends on what you're using.
If you're using a bog standard 50p piece or suchlike then I guess there's no point in doing that.
Some referees though use a special custom-made coin for the toss which to some players, it might not be obvious which symbol is heads and which is tails.
My coin is a large one with a different regimental symbol on each side. I'm always careful to show both captains which side I consider to be heads and which one is t'other. Avoids confusion.