Occasional reinforcement will keep him sharp and focused on what you want. Breaking is almost the antithesis of shaping. The concept comes from the Wild West when the cowboys corralled wild horses, selected one, put on a nose noose and saddle and tried to stay on 'til the horse gave up. The horse did it or it was subjected to enough pain to force him to it. The concept of breaking a dog sprang from the same root.
Reinforcement is negative.
An example of breaking to wing and shot comes to mind. The way it is done is to plant birds by dizzying them or putting them in some sort of release cage in the field or if enough birds occur naturally, use wild birds, but this is rare because it is not practical in terms of time and control. When the dog scents game it might point, hopefully, or it might charge to flush. Either way, the handler or dog flushes the bird and the dog chases. The handler hauls back hard on the line, the dog spins around the air, falls with a crack on his back and is quickly stacked back up back where the bird was with another WHOA bellowed out.