I completed Air Law just after the no-tag rule was introduced. When I started studying, I thought this would ruin me.
I soon discovered that tags were near-useless... This exam is about, and only about, identifying which piece of law relates to the question, and then referencing that page or pages. After 48 hours of study, it was almost second nature to flip to the correct section of the correct document, without a master index or tags.
Let me know if you want to know how I studied this subject... I truly believe you can ace the exam after 2-3 days of study, without a single tag (I used none).