Which of these are tricks that would be performed by riders in "Extreme Pogo" competitions?

"Malcolm X", "Heel Clicker" and "Can-Can" are all tricks in Extreme Pogo.

Most of us are familiar with the pogo stick, which has been around for 100 years since Max Pohlig "Po" and Ernst Gottschall "Go" registered a patent for a "spring end hopping stilt" in Germany in March 1920.

It's unlikely that they could have imagined how the pogo stick, and its use, would develop over the next century. Both the design and the materials used have been significantly refined and developed to improve its capability.

2004 was a big year for Extreme Pogo as the Flybar 1200, the first "extreme" pogo stick came onto the market. It supported adult weights while allowing the rider to jump to heights of over 6 feet. This was soon followed by the Vurtego and the BowGo, which was developed at Carnegie Mellon University.

In 2005 Brian Call performed the first full backflip on a pogo stick and enthusiasts quickly developed a group of tricks that were the building blocks for all trick innovation to come. New technical improvements to Extreme Pogo sticks now allow riders to jump to heights of up to 9 feet.

Social media has helped popularise Extreme Pogo as footage of tricks and displays by exhibition teams is now widely available. This unusual sport has also been written about in The Wall Street Journal and the Smithsonian magazine.

The first Extreme Pogo competition, "Pogopalooza 1", which took place in Nebraska in 2004 has now evolved into the Extreme Pogo World Championships.