Dangerous tackling will carry even greater repercussions in Super Rugby this season, as World Rugby tries to reduce concussions.
On top of the usual cards and bans, the competition will trial warnings for high-tackle technique and suspensions for repeat offenders.
As well as settling into a new environment, new Crusaders coaching recruit Mark Jones also has to get to grips with the latest initiative to clamp down on high tackles.
Jones is a former Welsh international and the latest member of the new-look Crusaders coaching set-up, which has lost high-profile assistants Brad Mooar and Ronan O'Gara.
As defence coach, tackling technique is very much part of his job description.
World Rugby has stipulated that a high-risk tackle is where the tackler is not bent at the waist, and when there is clear and obvious head contact with either player.
This Super Rugby season, any player receiving two warnings will cop an automatic one-game suspension.
"We've been working pretty hard on our tackle technique," Jones said. "And I think all the Super franchises would have been buying into that too.
"I think it's a sensible approach to the game."
The issue has been hugely topical since the World Cup, where eight red and 28 yellow cards were handed out.
The game-to-game inconsistency also led to widespread confusion over what constituted an illegal tackle.
"Other teams are averaging 7-10 points in the northern hemisphere, when you have yellow cards. Red cards are virtual game-changers," says Jones.
Player welfare is at the heart of the changes, with World Rugby saying, in some trials, the initiative has more than halved the number of concussions.
And players - as well as coaches - don't have much time to get it right. The Super Rugby season opens in just 17 days.