Yeah, don't cut the Gatorade. If you drink 24 oz of it per hour, you'll get 300 mg of sodium. I pop two additional Endurolytes per hour, in order to get 500 mg of sodium (and other stuff) per hour.

At the end of my ride, I drink 12 oz. of V-8 juice... TONS of sodium, potassium. Ice-cold, it tastes great