Hey, Myname,
It isn't cold enough yet. I just posted a pic of the Trail Camp pond ice in the Current Conditions thread.
I have seen several videos of guys ice skating Sierra lakes, John Dittli (mountaineer, photographer, winter snow surveyor, etc, etc.) is the one. But they have always gone in dead of winter in dry years when the snow is really sparse. I recall a video of their skating, with trout swimming just underneath!!
One year, I drove through Yosemite around New Years, and stopped and walked out on Lake Tenaya. It was an amazing experience. But those years are few and far between.