To get maximum power, this is the point at which the disc should be released since it is moving in the direction you want it to go. Try not to let the disc get much in front of your shoulder before release, as this is where you start to lose control. Positioning Positioning is usually of secondary importance behind time, often because most people have enough to worry about getting distance even without direction. Nevertheless, it is still worth thinking about where you want the disc to go, or, in some cases, where you don't want the disc to go. If the brick rule is being played, you must decide whether the possibility of a 20-yard penalty is worth the chance to set up your defence properly.
Similar arguments apply to aiming for the corners of the endzone.
If the throw lands in you are a hero, but if it is even a centimetre over the line then the opposition gets to take it 20 yards up and in the middle of the field, a double whammy. Basically, you need to weigh your chances of what you know you can throw with what you think you might be able to throw, and decide whether to gamble or not. Mostly you will find that the best play is simply to try and land a good throw in the endzone, and not to worry about going for corners and the like. The one thing that has been mentioned little so far, but which can play a large part in the effectiveness of a pull, is the influence of external factors such as wind, rain and sun. Obviously the most significant external factor is the wind.