Once the does come into heat which runs Nov1-20 as the span of the primary rut in our area, does will usually cycle every 21 days until bred. The so called second rut is a myth in my opinion. I will see some does getting run in december and january but most is sporatic at best and being able to cue in on rut activity is a shot in the dark at best. I think any time out there is time well spent but this time of year, I rely on prerut rublines and late winter bedding areas/food sources. If you find the does, you will still find the bucks. I think the late season is easier hunting the big boys just because it is easier to narrow down the places they are frequenting.