Coiling is not the same as turning from the ball in your back swing. To coil is to wind up your body like a taut spring ready with stored power to rip through the ball.

The elements of a coiled back swing consist of your hips turned 45 degrees from the ball and your shoulders 90 degrees from the ball. If you find that you can not turn your shoulders as far as 90 degrees from the ball just make sure your hips are only turned half as much as your shoulders to keep your back swing in balance. An example would be if you can only turn your shoulders 70 degrees from the ball then your hips will be about 35 degrees from the ball.

If you are looking for more turn add a lower back rotation stretching exercise to your workout routine. Also before your first tee limber up with upper body twisting stretches. Remember to follow though on every shot so as to not waste the power you gained from coiling and watch your balls fly.