Another way is to take a light meter reading and expose for the sky. Then set your camera for what you want your DOF to be. Your light meter will tell you what shutter speed to use. Your foreground will be under exposed, but with your Endless Summer reference I believe that is what you want anyways. Remember, with digital you expose for the highlights. If you don't, you will have highlight clipping, and will never have any detail no matter how much you use the recovery slider in Photoshop. If you are shooting RAW files you can always bring out detail in the shadows in the RAW menu in Photoshop. With film you expose for the shadows and burn in the highlights.