Are you set on hunting Colorado? There aren't many other rut hunts available. Arizona offers some but odds are bad. Idaho has a few early Nov hunts but again low odds of drawing. Nevada has some early Dec hunts and they are tough but possible to draw. Montana offers general season that run until Dec 1st. They are almost like over the counter as there have been leftovers the last 2 years after the outfitter sponsored tags were eliminated. The only states that I know you can do an over the counter late season mule deer hunt is Texas and Nebraska. They are both mostly private land but there are some big pieces of public in western Nebraska. Hope this helps.