Walk hunting

Oconee...honest to god question here, not poking. You've got huge tracts of land to hunt so you rig or cast mostly, walk into honey holes just to check them out, makes sense...my kinda hunting. But you train your dogs to stay close while walking, and they don't make big loops? Now, "close" is relative...close to me is 200-300 yards. That being said...once they hit a track, they take it to the source right? I mean...I don't see how you could keep them close walking but still expect them to cast properly. Honestly man...not poking at you...just confused.