In the UK, in the event of a mid-air collision in a comp, however
minor, both competitors are scored to the point of the collision and
are expected to land (or bail out) as soon as possible afterwards.

A few years ago one of our top comp pilots was killed shortly after a
mid-air. He was flying a brand new and very expensive glider and
attempted to land it in a damaged condition. Unfortunately the tail
boom eventually failed when he was too low to bail out and it dived
more or less vertically into the ground, killing him instantly. The
glider he collided with was able to make a safe landing.

You should consider bailing out of a damaged glider well before flying
on round the competition task!

Derek C