I find it pretty instructive that 2 out of 3 teams who were party in developing this sail choose not to use it.
There were only 2 of the 3 teams at the Olympics. So only 1 of the 3 teams choose not to use the sail.
I have used similar sails and I suspect the problem has to do with the difference between testing and racing. I found a hooter to be a big advantage when sailing against only a few boat, in clean steady air. I found it sucked when faced with the chaos of many boats going in different directions and shifty varying winds
