Thanks for your answer Willie Gunn.
I'm fishing with a big group of cracy Norwegians so I will get the possibillity to try several different beats in Dee, amongs them Dess, Carlogie, Cairnton and Incmarlo. I have found a lot of great information about these and other beats in Dee, Tweed and the other rivers connected to fishscotland.co.uk on their pages, but it's more difficult to optain information about the association waters which has to be the option if I'm going to fish for a whole month or more.
How crowded is the association waters you mention on the weekdays? I guess there also will be some good opurtunities in the smaller and less known rivers?