Your body and mind need this.

Increased strength and flexibility can help protect you from some injuries. (Unfortunately, it can’t stop those derby kisses!)
Balance is important if you want to stay upright in the pack.
Yoga is awesome for improving proprioception, so you’ll know where all of your body parts are as you move.
Better focus is going to keep your head in the game while you skate.

You need a yoga teacher who:

Gets how you move on the track
Knows how to adapt practice for your injuries
Isn’t going to talk to you about flowering your buttocks
Wants to help you find the variations of postures that work for you, not some yoga ideal