From my experience it is best to activate then mind-map. I find it best to use a pencil during activation for a quick note, then after few activations, I go back and make a mind map of all the key points I have highlighted for myself.
Important aspect I want to share with you:
A lot of people make a mistake of highlighting important key points of the text they are reading. This is a mistake because it is time consuming. Highlight and write down only that information which is new for you. Other then that you already know. That way you will save a lot of time for yourself.
