The best way to blow dry hair is to separate hair with a clip and dry in sections. Once the underside of your hair is dry, you can finish off the top layers.
Other quick drying tips: Try an ionic dryer, which also cuts down on drying time.
Use a round brush for perfect, rounded edges. One with holes and a hollow center, allows air to circulate and dries hair faster.
A good blow-out should last several days. Soak up oils in between with a dry shampoo or baby powder (my preference).