As a fellow sailor my condolences go forward to all who were involved and their kin and family. As long as there is racing there will be a trend towards the 'lightweight flying machines' in the UK we too saw this and in the end a number of area sailing associations created a class called 'Sportsboats'. Such boats were not allowed to participate in overnight races, it is dangerous to make assumptions when one was not there and did not know the actual circumstances but I wonder would the same disaster have occurred if it had happened during daylight when it would have been easier 'to read the water'.