The Dux Rampant forum is the site for all things Dan Mersey. There are a lot of discussions about the official rules, house rules, period variants and more.
When playing solo I made up cards for terrain so I could generate a random table. I also find I identify with one side more than the other and so have a randomised/blinded deployment of the "other side" which, to counter any bias is given more points than "my" side.
Otherwise, the activation system does a good job of having a fog of war even when playing against yourself.