I was flying in the Aberdeen area a good few years ago and we were unlucky to be on the receiving end of a green laser attack at night time. Luckily there were two of us and I was on instruments. The other pilot's vision was affected.
The point I wanted to make (apologies if it's previously been raised) is that the beam does not necessarily need to be well aimed in order to cause problems. In my experience the small scratches and swirls in the plexiglass caused the beam to fragment into many beams. The entire canopy glowed and the beams bounced around inside the aircraft like a burglar alarm in an art gallery.
WB