I would also love to hear from some knitters who are experienced in this. I tried this and ended up frogging the project. It was so difficult for me that I've decided to try a steeking project rather than deal with that mess again.
I did find this blog that talks about knitting fair isle flat and posts a link to tutorial but the video has been taken down! :pout: I'm going to contact her to see if the link can be fixed but that may take a while. Hit ctrl + F and type in 'flat'. That will take you to the paragraph where she mentions flat knitting.
I also found this video but I'm not sure it's really going to help me much. I just couldn't catch how she was dealing with wrapping the stitches. However, I want to watch it about ten times before declaring it a bust for me. It's a combo of English and Portugese knitting styles. I happen to use neither, but it might be of some use to you.
This tutorial seems like it would be very helpful, because she mentions how to move one thread over another, but it kept cutting out and I couldn't get it to play. Perhaps you will have better luck.
This page is page four of a nice little tutorial but it's not as good as a video. I love the videos!
I forgot to add the video from KnittingHelp! It is a good video but for me it doesn't really address the wrapping and float questions that I have. Skip to about the halfway mark to get to the purling part.
Please let me know if you find any good tutorials. Happy hunting!