What should your hips do when you swing? -- well, your right hip will move up and back as you take the club away from the ball, and then up into a solid position as the lower body starts to generate power. The left leg should remain a little flexed as the right straightens on the backswing. I have to mention here that straightening your right leg is not set in stone, and if it works better for you -- keep a little spring in it.
Average golfers feel that at impact the hips need to be open to the target but in reality, your hips shouldn't just be open but continually rotating to the left until your swing comes to a stop. Make a mock backswing without a club. Let your arms flow freely to the top while rotating your hips and shoulders then try to get your hips square to the ball by the time your left arm reaches parallel to the ground.
Stay "low" and focus on continually turning your hips. With a little practice, you'll develop a silky-smooth swing with loads of power. A right-handed golfer rotates around the right hip, shifts his/her weight, then rotates back around the left hip. The average tournament player has over 45 degrees of internal hip rotation on both sides.
Out of Bounds: The following Confucius quote could arguably be directed at many current golf journalists & commentators "The man who asks a question is a fool for a minute. The man who does not ask, is a fool for life".