& if a rider cheats he is only cheating himself so there is no point in being less than honest.
A commonly quoted but inaccurate statement. Because there is the possibility that some will take short cuts, routes are judged to be the shortest distance between controls, so events are invariably overdistance. So we all pay.
It's not always "shortcuts".
On some Audaxes I have deviated from the route, using the routesheet as "advisory". Both times I had a longer ride.
1) I stayed on a main road instead of the lanes. Yes the lanes would have been quieter and safer, but by sticking to the main road I could get my head down, speed up, and not worry about many miles of navigation.
2) I stayed on the main road, which was flat, rather than haul the bike up and over a steep climb on the back lanes. The ride had no AAA points, so why wear myself out when I don't mind riding in traffic?
3) I deviated into a town so that I could get cash out of the cashpoint for the next control. I didn't back track to the route but continued.
A Secret Control would have forced me onto the routesheet, but personally I wouldn't have had as pleasant a ride. I'm glad that AUK rules say "advisory" as that means I can make sensible diversions if required, and also if I do get lost I can continue to the route rather than trying to work out where I got lost and backtrack just in case there's a secret control immediately after the confusing turn.