Random that this post just came up. My buddy from Squamish has been asking, Green Lake is frozen if you stay away from the spit and the floatplane docks at Nick North.
Were a bunch of ice skaters on it on Saturday with a bit of wind as well. I've been looking for somewhere to buy a snowskate for my windsurfing gear. Alta and Alpha are both skatable as well, just watch for thermal pockets causing holes in the ice.