navigating
I used to fly tween 50 and 700 feet,at about 100 knts (which gives you about 8 seconds ) i would suggest looking for the following:
Wood`s
Railway lines
Road`s (motorway type first)
lakes
landmarks
spot a solitary reference (which is one of those above) enough distance ahead (which should be abouts the furthest you can get) and organise your map accordingly before committing to it....
Then repeat all over again