When I was young and foolish (April 1999), I flew under a very ugly looking cloud in my then R22 on the way back from the West country, using the simple judgement that as there were gliders around and using the thermals, it couldn't be that dangerous. It was a little rough and I recall feeling really quite apprehensive until I was well clear of the nasty stuff.
I then read about his incident shortly afterwards....
BBC News | UK | Glider pair's lightning reactions
Reconstructed on 999 here:
I think I used one of my 9 lives that day....