I'm intrigued about the 'washing sand off tyres' bit.
Really?
1. Why are they bothered about having some sand on their tyres?
2. Surely easier with a hose at the end of the day's flying?
As for the rest, I suspect that this argument/discussion will rage in exactly the same way there seems to be no grey area for driving on the roads:
1. Every guy who overtakes me is a crazy lunatic.
2. Every guy who I have to overtake is a Sunday driver who'd be parked if he went any more slowly.
Nowhere in between!
Safe flights (depending on your own definition of 'safe' of course), Sam.