I disagree that gain is the only thing to worry about. The other parameters drive the behavior a lot more and once you get the hang of it, you can reduce power consumption by 50% and still keep the big kite up in 20 knots of wind with the pilot steering.
Basic rules we use on the mini:
Gain: light winds 1-3, medium winds 4-6, proper wind, 7-9. It basically controls, how often per second the pilot will make course changes. Watch your power consumption when you increase this.
Rudder coeff. should be 1.5 to 2x boat speed. Don't set to anything higher than 18 (at least on the mini). It might break your rudder setup. Counter rudder: You can leave this at Auto most of the time, in which case it is the same value as gain. When downwind or reaching in heavy sea state, I tend to set it to Gain+1 or even +2. Wind damping: low winds 3 (sec), then work your way down to 1 second for high winds and sea state. You can also use auto, in which case it will again be the same as Gain.
Upwind, AWA obviously works best, for reaching I recommend Compass mode or AWA, for downwind it depends on the sea state, AWA or TWA. In the very light, try compass mode or even rudder angle mode and trim the spi manually, works a treat! I did not go through the trouble of preprogramming the settings, just have a laminated settings sheet in the cockpit and tweak the settings for the conditions i'm in at the moment.