Whether the leech hooks also depends on the wind strength. In trapezing wind it's pretty hard to hook the leech, but you just have to look at it and if you think it's hooked then sure put on a bit of downhaul.
I was just saying don't go overboard with the downhaul. Those sails just don't seem to need it.

I would never pull the outhaul on heaps upwind. Probably the tightest I would ever have it is so that the curved in foot is just touching the boom in the middle and that would be in very strong winds. Otherwise I would usually have a gap between the boom and the sail which gets bigger the choppier the waves get. I suppose in survival (panic ?) conditions I might pull it out tight but I'm not sure that's the right thing to do - it's probably better to have some drive at the bottom end of the sail even in wild conditions.

Sorry I can't give you very definite measurements but I tend to set these things by the feel of how the boat is going rather than by numbers.

And be prepared to drop that traveller!