Going to Red Rock Canyon with my wife to do some top roping. Projection is for sunny days (yea!), but a low/high of 31/50 deg F (boo!), and an 8mph wind. I'll be looking for spots out of the wind and with a southern exposure. Other than wearing the warm gear and gloves, are there any tips for keeping warm while belaying (in particular) or for warming up hands after each climb. One thought was to bring a thermos of hot stuff to warm the hands and insides. Any other thoughts. Patty is 55 and I'm 57, so staying warm is more critical than it used to be.