The real question was how much time is enough to begin taking action? I personally feel that if the other team takes longer than 3-5 seconds after eye contact to begin taking action or signaling where they are going it is too late for them.
Racing with large monos, we go around them every time. I think situations involving cats or fast dinghys develop too fast for the average mono sailor and they get that "deer in the headlights" syndrome.
This was a Flying 15, so they should have been able to avoid quickly and easily.
I'll have a chat with the guy next weekend and explain the error of his ways.
Just really want to be abke to say "read case x,y,z" or look at the following website.