I let a friend try my F330 last week - had taken the GoPro off and got it hovering and handed over the controls.. he off course went straight up into some wind and lost control.. as it was hurtling towards trees at about 70ft, he handed over the controls. I only managed to slightly slow it before it went straight into a tree and then crashed to the ground. Amazingly there appears to be absolutely no damage beyond some dirt on a prop..