Faithless --
You're shooting from a good location, near the blue line, but this means that more than half the action is going away from you. Your posted shots are of player's rear ends. Watch for the offensive breakaway coming into neutral ice, and the defensive play at the blue line -- that will help you get pics with the players facing you. like >>>this<<<
-- timing is everything.
Exposure is really tough. Some shots are too dark, the ice shouldn't be gray. Second and last shots are properly exposed, but can benefit from adjustment of the midtones & dark areas using curves in photoshop. You don't have "Image editing OK" so I don't want to post edits to your photos, but the attachemnt shows how I would adjust the last one (your fav...)
One problem with exposure is the auto modes Av, TV adjust based on what's in the frame. Shots with more ice and light jerseys will be darker, shots with more black hockey pants and dark jerseys will be lighter. None of your exposures end up the same, and none truly right. That's why M mode works for hockey.
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