It targets the adductors in the same way as the traditional side split, and hip alignment is the same in both positions (toes-up and toes-forward).
Here is how to do the stretch:
1. Sit down and open your legs as wide as possible. Your toes will be pointing straight up.
2. Imagine a pin has been hammered through one ankle, so that foot does not move (you will be moving the other one).
3. Place one hand on the floor behind you and the other in front. Lift your butt off the floor.
4. Push away from the ankle that is pinned, sliding your other foot sideways. Keep pushing until you can't go any further.
5. When you've hit your limit, pull roll forwards onto the soles of your feet so you transition from toes-up to toes-forward position, and hold.
Repeat this a couple of times, tell me if it worked for you!
(I went from 12" to 9" off the floor in the side split in a month using this method, combined with Kurz's method of isometrics and weight lifting).
Good luck
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