When you have a plane with the wind blowing from the side it will act like a weathercock (if that's the right word) because of all the wind against the rudder the aircraft will turn into the wind.
But if you start the engine wouldn't the prop wash be much stronger than the wind? In ROF the propwash is modeled nicely so you can lift the tail from the ground while you are standing still when you have full throttle selected. And when you land and you're going the wrong way you can make the rudder more effective when you turn the engine back on.
I have stood behind prop aircraft in real life, and the prop wash is really strong. even with pretty 'weak' engines (engine of a glider (ash25mi) probably has something like 45hp)
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