If this person is that worried about the drag caused by a spi halyard running down the mast I think they should see a Doctor. As for keeping this new rigging technique 'Top Secret' thats not really F16. But it can't be that advantageous otherwise the Olympic Tornado's crews would all be doing it.
As for developments in rigging and upwind sailing techniques that was the purpose of this thread, people could be open with information which would in turn help the Class to be more competitive, and for me help understand the differences in power to weight ratios of my nearest competitors. I guess I'll have to wait 10 weeks now!!!