The surface 540 and the surface 900 are performed by spinning 540 degrees and 900 degrees respectively in one continuous motion. Use a palms down grip. Pull the handle to your waist and let go with one hand. Rotate backwards while keeping the handle as close to your waist as possible. When you get into the backward position, grab the handle with your free hand. Now, let go with your other hand and spin back to the front. Immediately spin another 180 degrees in the same direction by pulling the handle to your hip with both hands. You just spun around 540 degrees! Now, perform two 360's before you finish with the 180 and you'll have a surface 900.
Some things to remember:
Always look at the horizon. In other words, don’t look down and keep your head up. Looking down will throw off your balance and may cause the board to bounce out of control while backward.
The initial pulling of the handle to your waist will cause slack in the line, which enables you to turn around quicker and easier.
Keep the handle close to your waist at all times or else you won’t be able to reach the handle when backward.
If you bounce a lot while backward, you may be leaning forward too much and/or you may be looking down.
The next step:
Perform surface 540's and 900's outside of the wake.
Try performing a wrapped surface 540. Pull in on the rope and grap it as far up as you can with your left hand. Bring your left hand to your waist and tuck the handle under your left arm with your right hand. Let go of the handle and reach around your back with your right hand to grab the handle that is under your left arm. Now let out any slack, but remain holding onto the rope with your left hand. When you are ready to spin, just let go with your left hand and the boat will pull you around 360 degrees. Keep the handle close to your waist as you come around and grab it with both hands. Immediately spin another 180 degrees in the same direction by pulling the handle to your hip with both hands.