The point that I am trying to emphasize is that the human body ability to estimate the safe air speed of a model decreases drastically the closer the plane is to flying directly toward you. Many believe that your depth perception will help you. If you google Depth Perception you will find that it is about 17 feet. Yes, feet. When the plane is landing near to directly in front of you, left to right or right to left, you have the best view to help you estimate the safe air speed. I have stalled it into the ground HARD many times in my 39 years of flying RC, and have noticed that this usually happens when the plane is very far from me; the angle between my line if sight and the plane path is very small.