What specific tracking ability was favored over sheer speed in the selection profile for coon hunting?

Answer

Cold-nosed trailing

Coon hunting required a dog favoring a cold-nosed trailer, one capable of holding a scent trail for hours even after the trail had faded, rather than relying solely on sheer speed.

What specific tracking ability was favored over sheer speed in the selection profile for coon hunting?
DogbreedCoonhoundancestor