I hunt them with a Lab that hunts close. But in the standing corn, it's hard to keep track of her or for her to keep track of me. I took to talking to her while walking with the others thru the corn so she could hear me and stay close. It seemed to work well as she never got separated from me and kept returning to me. Frankly, hunting with a dog in the corn really isn't much good for the dog, IMO. Hunting in the standing corn with a pointer seems like a excercise in futility or how to untrain a pointer. But, I don't know much about pointers except the two Hickox classes I've taken and a few released birdfarm hunts over a shorthair.
The dog lore is that the Springer Spaniel is the dog breed of choice for dedicated pheasant hunting. I can see that after seeing some in action. They make my highly active little young Lab seem like slow motion.