Nothing was said about keeping your head warm. Might be a bit of a no-brainer but thought I would bring it up.

I have deer and coyote hunted in deep snow with a bag. Don't forget to bring a white sheet to cover up the bag. Works great but make sure to wear an orange hat.

One time I hunted geese laying down on a lawn chair. Covered the chair w/ a sheet then covered myself w/ another sheet. Had geese fly 2' over my chest.