This may have been raised elsewhere so apologies if I'm repeating someone else's point but:

The signal given by the referee when sending Moa off was a point to his shoulder then the signal of a shoulder charge, I didn't understand this there was no reference to a head high tackle. A shoulder charge as I thought was a legal challenge. Has there been an alteration of the rules or am I reading too much into the referees signal.

Personally, I'd like to see the shoulder charge banned from our game.It's a hard enough sport without increasing the risk of someone getting seriously injured.

Union players manage to get big hits without it, and I've always thought it was an easy option for a player who lacked the technique, or the bottle to put in a proper hard rugby tackle.

The last paragraph says it all - a shoulder charge is for those not prepared to use the correct tackling technique

Nothing wrong with a shoulder charge as long as its below the neck. Plus big shoulder charge hits are actually pretty rare.

The fact a defender is hitting with the shoulder rather than the arm doesn't preclude the need to take some degree of care over where they make contact.

If you hit an opponent to the head, it's a penalty. If you do it recklessly/deliberately it's potentially a red card or a subsequent suspension IMO.