It's all about courtesy and consideration.
I do agree with this statement. We all (ok, well....most extend this to each other) to each other. BUT...... The frequency board is there for a reason. We are not dealing with $10 planes here. If it is used every time, these accidents would never happen. It should never be a possibility of this happening. I'm not sure, but is there a rule in ama about the usage of a board for a AMA sanctioned field?
Shaun