When you control the dog's head you control his body. Your dog won't like his Gentle Leader at first. Instructions come with the Gentle Leader so follow the directions. Once conditioned, it is a good method of walking an active dog and yet allow the dog room to exercise. However, it is quite useful and very humane.
Crate training is useful for any dog that needs confinement.
It prevents bad habits, protects the dog from his environment, teaches him to accept confinement and gives him comfort. Four to five hours in a crate at one time should be the maximum. Remember too that extensive crate time means more exercise to burn off stored up energy. Dalmatians should be social creatures and enjoy interacting with dogs and people. Have your dog sit, reward him with treats, talk with confidence and be happy.