I made a fully functional hockey mod 2 years ago with Damien and Racerboy.Never fully released it tho, I could probably fix it up and release it if there's enough interest.It had: Skates, helmets, goalie stick, hockey stick, checking, etc.https://forum.blockland.us/index.php?topic=231569.0
If you are not interested in fixing it up I can do it for you, if there are things you planned to fix please let me know if you send it to me
EDIT: Damien released the hockeymod in an addon dump, here's a download: http://files.dataorb.net/blockland/addons/
I had included a hockey helmet in my second hat pack.https://forum.blockland.us/index.php?topic=271414.0
I have a similar version of that on my server and there are bugs to it. The mod is not really playable until someone fixes it.