I know some of these posts are old, but there are some timeless EQ things going on that it seems like many people still don't know about. Rooted mobs don't apply any negative damage mitigation to a Ranger's bow attacks. If you shoot a rooted mob, you will notice you hit for the same damage as a monster that is snared/unsnared and moving.
You will also notice that the damage dealt to a moving mob is far less than the damage you deal, say, when you are in a group and the monster is held in place by a player/pet. This is because Rangers do, and always have done, double damage with their bows against unrooted, unmoving monsters. This AA will increase your base bow damage by 30, 60, 100, and, since the AA section of Zam hasn't been updated in forever, 120%. These poercentages do not stack with each other, either, like some do. So, at rank 3, your bow will do 2x damage from these AAs, and 2x again against an unrooted, unmoving mob.
Bow kiting was never effective before, although it may be more effective now with the other AAs Rangers hyave gotten over time. For that matter, though, I don't think Rangers were ever supposed to be a great solo class. If you think about it in terms of Rangers are masters of the wild, it might seem like they would be, but Rangers are guides. That's why they have the best track. A long time ago, if you wanted to find a monster fast, you found a Ranger to find it for you. The spell sets of a Ranger even lean toward assisting a group. I am not quite sure where the idea that Rangers were supposed to be really good at soloing came from, but it seems to have permeated the psychology of EQ players over time. Even years ago, they were not that good at it. People did solo, and they still can, but, from my own experience as well, it is slow.
I hope this helps other people who come here and look at these AAs. They are very, very good to have. Vital, even.