I taught Kyara how to turn around target using similar tactics.
I based my teaching on Silvia Trkman's "heeling is just another trick" method.
http://www.lolabuland.com/training-videos/heeling/ (the dvd is quite expensive so I was lucky to know someone who has it but if you look in the comments you can see some dogs trying it out).
It is basically what Goggle described above. But I just wanted to add that I strongly recommend using Shaping which does take more time at first (and lots of patience) but once your dog understands what you want through shaping, it really sinks in and they seem to really get it and not forget it after. Also, I find that since I used shaping, Kyara really seems to learn other tricks much faster.
So at first be very patient and just sit and stare at your dog until she actually starts showing interest in the target (I use a circular cake pan placed upside down on the floor). Click and treat as soon as she looks at it. Once you see your dog understands that you want her to pay interest to the object, wait longer, eventually wait until she touches it with her paw. Gradually go up the other steps described by Goggle. She might get frustrated at some point, whine but that means she is thinking. You'll see her start to offer various positions she knows, lying down, give the paw, etc, but just be patient or move down one step if you seem to be stuck. Also keep in mind to practice this often and only a few minutes at the time. Always make sure to end on a positive move on her part and when she still seems to want to keep training.
The only part where I got really stuck and used some luring was getting her to turn while keeping her front paws on the pan. I just put the treat right beside her nose making sure to stay above the pan, and clicked and treated as soon as one of the back legs moved eventually clicking only after more and more steps.
But after that it was very difficult to get her to turn correctly without a treat... until one day, when I was just sitting with friends not paying attention to Kyara, she suddenly stepped up on the pan (it had been on the floor since our last training session earlier that day) and completed a full circle both front paws on the pan, proudly looking at my face once she completed.
Good luck
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