"And then there is this
greatland l@ser
Has anyone experience of this product (either end of the beam!)? "
The Greatland was designed by a pilot for pilots (downed) to signal to pilots(flying) in Alaska.
It is 5mW - enough to be seen as a bright dot in the distance but nowhere near enough to illuminate cockpit or disrupt flying.
Your problem lasers are 200mW or greater (also usually green since they appear brighter to the human eye). Technically not for sale in the UK but available by post.
Interestingly the US Coast Guard helo rules are, if a laser is shone at the pilot, abandon rescue immediately, go back to base, go to hospital for eye check.
(How do I know this ? I have been working on, inventing and selling, emergency laser signalling devices for years. I tested a Greatland with a UK SAR helicopter - by mutual consent. No problems.)