The reason you're having a tough time is because this is a REALLY hard shot. My inclination is to bust out the talent and spin around the table with left but if I don't feel I'm going to make the ball (like, if I'm playing on tight equipment), there is one really cool safety option to get you back to the table. I say it's cool because it's not that tough to do and nobody sees it coming until the balls stop rolling.
If the 8 ball is frozen to the rail it makes the shot a lot easier. You can hit the shot with bottom left at about 7:00. But make sure you hit the rail slightly before the 8 ball. The spin should bring it back to the 9. Personally, I haven't tried the shot from your cue ball position ("A" in the picture) but I've tried it from cue ball position "B" and I would say I have about 80% success with the shot if the 8 ball is frozen.