That looks so easy when the pros do it. In my last attempt, with around 17Kts of wind, I ended capsizing.

the problem with gybing is the big lurch that often capsizes, it's quite a hard manoeuvre to suss fully, but using an RS Tera which are quite small and not very deep, and for quite a big person like me (I'm 13) even though I'm on my own in the boat you have to really mind out the way of the boom, cos if you get in the way of it then it is gonna hurt quite a lot.