Flight protectors maintain the flight spread, which aids aerodynamics by avoiding excessive movement while the dart is in flight. This allows you to hit the target more precisely. Flight protectors also serve to safeguard the flight when it is already on the board and gets hit by another dart. Finally, they are used as safety equipment because they provide protection for dart players if a throw fails. The main difference between amateur and professional darts is the type of dart used. While amateurs usually use B-darts (for beginners), professionals use F-darts (for fans). The reason why professionals use different darts than amateurs is because they want to be able to play with a variety of weights for different situations. For example, if there's a heavy wind or not, if the opponent is throwing hard or not, etc. Using various weights makes it easier to win matches. Another difference is that professionals always wear protective eyewear while amateurs often don't. This is important because even though the dart may not break when it hits the board, it can still hurt if it hits you! Professional dart players also use hand-held electronic dart meters to help them keep track of how far away their opponents are from hitting the board with their darts. These devices sound an alarm if someone is getting close to hitting your ball, so you can move away before you get hit. Finally, professionals use stronger throws than amateurs.