This is a related question, Rallye Driver wrote:
Despite two of us keeping a sharp lookout we were suddenly surrounded by about ten gliders above, below and to the sides.
This sort of configuration is something that most power pilots would avoid - are gliders much more manoeuverable than powered aeroplanes, and is the visibility much better?
Or is it just that the "gaggle" of gliders are all used to flying with each other so are comfortable with that level of proximity?