Using dictate to make bullet notes is impossible. The microphone stops recording after a few seconds of no audio. Maybe make a setting where it can dictate indefinitely, and be modified where the text appears where the cursor is.
Using dictate to speak notes into one note would speed up note taking immensely since I can use the book to speak the main ideas, and then go back and using enter, tab, and shift+tab to make bullets and numbered notes. If dictate could simply read my words while I can make these adjustments I could note take multiple chapters at a time in just one hour.