RE: J3 cub, crash on take off nearly every time.
if you are flying 30mph plus you are right, but if you fly like I used to fly my cub at around 15 to 20, and you are flying in in similar wind speeds it makes a big difference. at same settings as you say I wouldnt have had a cub left, simply because the controls did not have enough airflow to work and it would just stall. As slow as I liked to fly the cub it did make difference with my cub