Hansen wrote:The Southern Split doesn't work for dudes in Marshall, Tracy etc unless the fall is warm. Most shallow potholes are frozen by the 10th of November. It works in eastern MN. It works for me because I have access to a creek that hold mallards and takes a lot of cold to freeze.
I don't think a state can have more than 3 zones. I could be wrong.
Simple, the central zone absorbs the Southern zone, leaving option for third zone to be a river zone. Hastings down to IA, ten to maybe fifteen miles of land from river in zone....call 'er good.