Jerry,
My outhaul could not really be tensioned with Daniel on board, the system I was using then didn't really allow that. Still it was pretty tight. However the lower 1/3 of the sail still had a little draft in it. Middle and top parts where rather flat I can't really remember how flat. I weighted 85 kg then, Daniel was about 60 kg or slightly less and we were double trapping in wind swinging from 15 to 25 knots of wind.
One thing I also tend to do when it is really honking, is derotating my mast till the top of mast falls away to lee and inverts the top 2 to 3 battens. Meaning that the battens bend towards the luff side of the boat. This really depowers the rig and doesn't seem to hurt speed much. Try that on a boat with a different mast ? Point is that there are many things you can do with this rig to depower it. More than you can with a normal rig. Now I just have to find out which is the fastest method of depowering. Although I'm finding out that staying upright in such conditions is by far the best way to a good result no matter which method for depowering you choose. More and more I concentrate on making the boat calm first, choose proper lines and approaches second and fine-tuning third. That is in the really really strong stuff. When things are alot calmer then fine-tuning moves up. Here proper trim can make big differences in boatspeed and therefor in your final placing.
Wouter