Without a motor, they don't fly too good... But with the motor, they sometimes fly until the battery dies! I built a Cessna and put a tiny motor in it (about half the size of this Cub!) and it flew for about 5 flights. Then I launched it wrong... It stalled and smashed nose first into the driveway. The propeller broke and the motor doesn't work too good. Not to mention that the entire model was destroyed...

For this Cub I'll attach a long string to it, just in case it goes too far out.
The Goose should float... Maybe I'll built a flying Goose and takeoff from the pool... It's made from really thick paper, so it should survive for a while before sinking.
Yeah... A lot of patience... I got angry twice and destroyed two Gooses. Finally got the third one right...