What are you doing for activation? What method have you used?
I find it hard to believe that with asking mind probing questions and then superreading and dipping or skittering along side mind mapping that you get "nothing out of activation". How long are you activating for and how many activation passes do you apply before you give up?
Your purpose will help determine what you find in a book. In the case of learning something new, that's your purpose as well as your probable first question for activation. 'What don't I alread consciously know?'
Alex