My strategy for keeping my hands warm is skiing style gloves with a handwarmer in the right one. The left one stays plenty warm since the hand never comes out, and the right one warms back up quickly with the handwarmer in the glove.
Also, if I'm playing solo I go to shorter courses and throw putter only rounds, or even superclass, they dive under the snow a lot less even in fresh powder.
Also, if I'm playing solo I go to shorter courses and throw putter only rounds, or even superclass, they dive under the snow a lot less even in fresh powder.