ORIGINAL: B.L.E.
Get a scale Cub, if that won't learn you to use the rudder, aint nothing going to.
Ain't that the truth.
Actually you could probably go one better and say any Cub,
Big wing, short stubby fuselage equals lots of adverse yaw needs lots of rudder. Without rudder on a cub it's a matter of time before it will roll over on it's back because you added more aileron to get it to turn quicker and made the yaw worse then it will suddenly snap to the direction you moved the stick and now you are overcontrolling and heading into a spiral that only opposite rudder can get you out of.