I would be nothing like this. This would be me:

A Redditor asks, "Is it possible this would actually be a viable style for Olympic long jumping?"

A Redditor responds:

Doing flips on the long jump in the Olympics got banned after someone did it because it uses centripetal force to your advantage. When jumping normally you are actually fighting centripetal force therefore doing the flip is a significant advantage.

Relevant: http://sportsillustrated.cnn.com/vault/article/magazine/MAG1088829/index.htm

For people who aren't into this: