Thank you all for responses, things are getting clearer.
Took some photos of Tornados at the Volvo Champions Race last year, learning from the big ones. In the attached photo there is a low rotator arm, with the sheet lead to a cleat to the side of the hull. If the cleat is placed in the region of the shroud it should work well for F16 1-up and 2-up.
In the photo at the end of the rotator arm, there is a red line loop to the front beam. Could this be a kind of rotation limiter to get back to a pre defined position if the cleat on the hull is released? Or used for some extra rotation if pulled in other direction?
Holger
It's a mast lock or rotation inducer, Holger.
If you want more rotation than is happening naturally under sheet tension, or perhaps conditions are lumpy and winds light, you pull on rotation with that line.
