As other advice doesn't appear to be forthcoming, and I have no idea what NHL arena lighting is typically like, I did a quick Flickr search of your arena to get an idea of what a good exposure is: LINK

Some example exposures in the first few results:
f/3.5, 1/1600s, ISO 3200
f/4.5, 1/1000s, ISO 4000
f/3.2, 1/1250s, ISO 2000

On a slapshot image, where the end of the stick is a bit blurred:
f/3.2, 1/1250s, ISO 2500

All these shots appear to be from someone with access to the edge of the ice, or perhaps on ice, with frame-filling shots. If you're shooting from further up in the stands, and getting a wider view, you can likely drop your shutter speed, and thus reduce your ISO.