I picked up a chunk of Polar fleece from the sewing department at walmart, and sewed a transmitter mitten. It's just a flat envelope with a hole in the top for the antenna and open at the bottom for my hands, big enough so I can wiggle the sticks. If it is really cold, I put a chemical hand warmer in there too. This works to about 5F.

I wear liner gloves while working on the plane. They are thin enough to wear while flying too. Good to about -5F.

I do all set up at home in the warmth of my garage.

I ALWAYS use the electric starter in the winter. Getting a cold finger smacked by a prop hurts about 100 times worse than it does in the summer.

Sun glasses are a must.

Also a big thermos of coffee.

Coldest weather I ever flew in was -20F. The cold dense air does amazing things for engine and airframe performance, but I froze my parts off and probably wont do it again.