A couple of tips given to me when I was bashing round western QLD - ignore most roads because a lot of them are temporary, and what looks like a road may be a survey line. Creek beds on the other hand are fairly permanent, and are (were) accurately depicted on my WAC of 20 or so years ago. As RENURRP said, the lack of features will be to your advantage: if there is a lake or a hill it's probably the only one for miles.
The other one is to fly a few degrees either side of course if you are aiming for a point, usually not correcting for wind, but if there is none, or a head/tailwind, you choose. As described in Chickenhawk: "Off course navigation, you don't correct for wind drift, just fly your magnetic track for the length of time calculated, then when the time is up you fly upwind to find it."