Sorry folks,
Had recently been to a (it really was very good, highly recommended) Gasco safety evening
There were some quite shocking videos of aircraft flying right through parachute drops.
My reply was meant to be blunt, and possibly controversial. That way it might grab attention.
But to be frank, parachute drop zones are pretty obvious safety critical area. So the horse's mouth should be the first port of call.
On the other hand, you might think I am a horse's ass!