For a future race, a suggestion might be to select a particular default scenery area centered on an air strip, with a number of prominent land marks, (Churches, factory chimneys, towers, etc, which everyone will have), as the "turning points".
The complete course distance being in the order of some 20 miles or so, (with 5 passes over the finish line, total 100 miles), containing the turning points manned by the observers who will ensure that no one cuts corners and therefore suffers penalty points.
Together with the handicap, this is the way that real air races are run......!
...just a thought...
Paul...ever helpful......!
LOL...!
Great idea for the next one Paul. This Saturdays race will be default scenery only in a fairly small area (about 120 miles). The emphasis is on low passes, t+g's and battling multiple fast elevation changes. A short simple course with just enough twists to keep everyone on their toes!