I always use one notch of flaps on take off. It shortens Take Off distance, and climbs very nicely. I also use one notch on landing, occasionally I have used 2 notches, but it is mainly because I just missed the first notch. If I don't use one notch, when on base I start slowing down to 75 the down to 70, my *****ing Betty starts yelling at me telling me "Angle Angle Push", "Angle Angle Push", until I put in one notch of flaps, after which she will mellow out until I'm over the fence and starting my flair.