I've got a couple of models that take a bit more attention on takeoffs. The airframes don't come online until they've got some airspeed. The Decathlon's rudder is worthless until the sucker is moving decently. Actually, on calm days, it's worthless. The airflow is screwed or something and there isn't any airspeed to clean it up. Whatever.... it's a witch in the calm. It needs airspeed to work and it won't get that until it's ground speed has given it that airspeed. But the blasted prop is working great at zero ground/airspeed. And will pull that sucker off the ground way before the airframe has even thought about working.

But on a windy day......... Darned if that rudder doesn't start off with whatever airspeed Mother Nature is throwing around. With luck, the wind is my friend the days I take the Decathlon, and it's blowing and blowing down the runway. I'd always rather fly that sucker in some wind rather than a calm. But most days, the wind is your friend.