Korkers size ?
They tend to run a size smaller, meaning that you need a size larger. For example, I usually wear a size 9, but found a size ten was necessary in the Korker's Konvertable boots.
PS: Depending on this "showdown" and Park closure, if still closed, I'd suggest fishing either in Townsend or out of Gatlinburg. Folks are being allowed to walk into the park, but only being able to walk, limits one's potential destinations for fishing (unless they hike in and camp).
"Fly-fishing has many attributes, but none more pleasing than it's ability to liberate the young boy that still hides within me and to let that boy live again without embarrassment or regret, sorrow or anguish." Harry Middleton