Hi Don,

never ever sailed a Nacra, but some rules are valid for all boats:
I think it is too docmatic to say control nr. 1 is downhaul number 2 is ..., etc.
On upwind legs, you want to have a flat sail and in gusts a even flatter sail. On a reach, it is similar, but you want maybe to have more twist in gusts than on a upwind course.

According to that, I use downhaul, which has a strong effect on the upper part of the sail and rotation, which affects the medium and lower part. However this may differ a bit with boats (sloop or cat-rigged, mast shape, etc.)

As long as you don't use a kite, you play all the time with the uncleated main and rudder with the aim to have a staedy ride, while downhaul, rotation and outhaul are set from time to time according to course and wind strength. I use the three at the same time (but the outhaul only if I change form up- to downwind and vice versa). If you have a crew, you have more hands to play with strings of course...

Also some tell tales will help more than fixed rules like "first downhaul, than rotation, etc...".
If you want to see some good layouts, you may google for Tornado, F18, F16 or A-Cat pictures.

Cheers,

Klaus