I just purchased the RST with the in& motion airbag for coaching. Hasn't arrived yet but will let you know what I think.
You should have a back protector at bare minimum.
We go through all of those points at each individual track in the novice only meetings and we generally stay after to answer more indepth questions as well. Unfortunately not everyone feels they need to attend those meetings. There can also be a large experience gap between the riders in the...