I used to use a fanny pack all year, for everything, but where I was hunting was less rugged, and the chances of needing to overnight was near zero. I use a smaller day-pack now during fall and winter because it's nice to have a few extra things with you for an unexpected overnight. I do have a couple spots I hunt that are easier and I'm less likely to need extra stuff. For those a fanny pack still works well enough, but as someone else mentioned, once everything I know I need is in my day pack I've found I usually just grab it.

“You never need fear a man, no matter what his size. When danger threatens, call on me, and I will equalize.”
Samuel Colt.

�Common sense is genius dressed up in work clothes.� - Ralph Waldo Emerson