My brother Rich Cizauskas participates in hang glider races. I'm never certain of the exact terminology or correct phraseology.
[UPDATE: corrected again! 2007.06.03]
But, I do know (having been corrected on several occasions!) that a hang glider is NOT the hang glider pilot himself but the vehicle he/she uses to hang glide. And the verb to fly is often employed in place of to hang glide.
Here's a recent profile of Rich at such a competition.