Thanks so much Nicole,
I found the blog:
http://nonaknits.typepad.com/nonaknits/
but couldn't find her explanation of the technique. I'm pretty sure I get it from what you said however and will be sure to try it when I get home to my knitting (I've had to make a rule of no knitting at school). I'm so glad that there is something else I can try instead of going mad trying to pull the life out of the yarn and cramping my hands.