Re: Several things about these stories bug me...
One handed from a motorcycle? Are you staring in the next bond movie or something? I assume it's your left hand too (unless you wanted the bike to slow down?).
For a start I do live near an air field, quite a few in fact. The East of England built a lot in the 1940s. One of them is rather large and called London Stansted. Whilst I'll concede that assuming you could aim and hit a moving aircraft with a pointer this would be a risk to a light aircraft, the story is written in such a way as to make you believe the treat is real to 747s, not light aircraft which don't tend to do much night flying.
The story has other inconsistencies too. The whole "power" of a laser is its small concentrated beam. We're talking about a device whos power is measured in milliwatts and run constantly from a watch battery power source for hours on end. Suddenly saying this concentrated beam lights up the entire cockpit like a flash gun, a device which is run from a bank of much larger batteries, via a fast discharge capacitor and then discharged through a zenon tube which delivers more light that a 10,000watt light source for a thousandth of a second. Yes the laser could be defused by the window, but then the inverse square law dictates the power drops to negligible.
So which is it? Does the laser surgically burn the pilots retina off, or does the cockpit light up like a Christmas tree?
Yes, a hovering helicopter would be an easier target, but tell me, what is he going to crash into in those few seconds it take to look away from the idiot with the very steady hand holding the pointer? He's hovering! He might drift a bit, but he's not going to fall from the sky! I might even knock his night vision down a peg or two, but do you know the requirements for a night pilot licence? Yup, instrument only.
I file the laser pointer threat along with the mobile phone threat. They're annoying, but hardly the "we're all gonna die" "Won't someone think of the children?" reaction we're seeing. Otherwise we'd be surrounded by twisted wreckage.