We don't really do much tree work over the winter.  The snow, cold, and skiing seem to get in the way.  Mark spends his winters hiking and skiing the Headwaters.  He's the old guy that blew by you on the hike, or the one skiing 3rd Fork that makes you feel inadequate.  Bart spends his time on the other side of the mountain.  He usually has his head in the snow, his back to the wind, and hopefully, his skis on his feet.