Although this is in relation to rugby, I'd thought I highlight this;
https://bjsm.bmj.com/content/early/2021/02/09/bjsports-2020-103274Published March 23rd 2021.
In short, they're testing saliva for chemicals indicative of concussion.
Concussion has been mentioned on this board previously, regarding spins/jumps/falls;
also present in ice hockey, and short track speed skating; long track is probably more safe.
Question for the coaches; has there been much coverage from the NGBs regarding concussions?
Does the required First Aid course currently cover it in much detail?