Of course I sail with the Superwing mast as well and with this mast you don't want to sail with less rotation than 90 degrees in strong winds. This mast is rather flexible in the top and has a low hound fitting. If you don't rotate it fully in strong winds than you can witness your mast bending forward by a huge amount. Been there, done that, with witnesses around and they assured me that I'd better do 90 degrees next time. Ask Phill Brander or Geert Ruesink; they were on the other boat waving and screaming for me to stop.

Of course in lighter conditions you can derotate (less rotation than 90 degrees) but when you do still keep a close eye on the top it doesn't take much load to bend the top away. The superwing mast section is simply different than most other catamaran masts.

On the outhaul I have no opinion as of yet. I haven't been able to experiment with that.

On downhaul; I loosen it as Eric says when I find the time to do it; halve the time however I forget to do and just sail downwind with it on. For some reason I haven't felt a clear advantage or disadvantage of either setting. Probably because when I forget to do it it is always blowing and so a flat sail may not be a bad thing then.

Wouter