first off I would think brush would be closer than south park and second I'll tell you right now i live in south park and I drive to brush to hunt. there isn't much up here especially in that part of the park.
my next thought is do you wanna meet up and hunt out by brush. i typically go out that way once the migration starts.
Sweetest words in the world are when 100 birds are trying to land on your face and somebody yells "KILL 'EM"
1 wood duck