Gee, where I come from the most active one design is
1-26ers.
Only available in the US, design is proprietary.

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I was not aware that soaring was in the Olympics.

It was going to be, but it was aborted in the early 90s.
Hence the World Air Games.

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So traveling to the World games is considered low budget?

The same way as traveling to compete in the Olympics with Lasers, Stars,
49rs etc.