slight arch or straight line. Skaters increase the difficulty of camel spins in a variety of ways. Other spins A flying spin is the combination of a jump and a spin. A flying spin can be appealing for the audience to watch and exciting for the skater to perform. Petrovich describes three types of flying spins: the flying camel, the flying sit spin, and the butterfly. The flying camel consists of a jump from a left forward outside edge, about one revolution in the air, with the landing executed in a camel spin. Dick Button might have been the first skater to successfully execute the flying camel; for many years, it was called the "Button camel". The flying sit spin was first performed by Buddy Vaughn and Bill Grimditch, who were students of figure skating coach Gustav Lussi, but Button and Ronnie Robertson made it famous. It consists of a take-off from a left forward outside edge, a sit spin position in the air during one-and-a-half revolutions, and a landing in a sit spin. According to Petkevich, "When the jump is high, it can be an exhilarating maneuver for skater and audience alike". The butterfly spin is so named because it describes the position in the air. It consists of a take-off from both feet, a body position horizontal to the ice, and a landing in a back spin. It is often performed at the end of a skater's program because although it adds to a program's technical content, it does not require much precision or energy to execute. The jump section of flying spins is executed at the beginning of the spin and is part of the entrance into it. The angular momentum on the entrance, like for all spins, must be converted into pure rotational momentum. In ordinary jumps, angular momentum allows the skater to travel a long distance across the rink and propel high into the air, but for flying spins, the principles that govern the spin dominate the jump portion of the spin. The goal is to minimize forward motion on the jump portion. Creating speed on the spin portion is also a goal, but a flying spin never achieves the speed of a basic spin because some of the forces assigned to achieving the speed in a basic spin must be used to achieve height on the flying spin's jump portion. Centering the spin after