I'm assuming an English cocker not an American cocker?...Loads of difference, but ECS still should be from hunting/field trial breeding.
In olden days, English cockers were separated from a litter of English springer spaniels by size and called cockers; thus the somewhat similar appearance in the two breeds. After proper water introduction, like springers, English cockers can do some mild weather, occasional water work, but their coat is not a cold water one and to a degree their size works against them, too. Also, being a high energy, upland dog calmness in a duck blind could be a challenge.
