What is not public and is not on the dvd is how is your diet adjusted on the other days, how long should you skipload, how to know if you need more or less hours of skiploading, etc etc.
And really, this is pretty much individualistic.
You are right that you should go by hunger and that is public info
What is also public is that you should try not drinking water while you are loading
The reason why I cant comment on the rest is that I am working with Skip still and the rest of these infos are private, sorry