...are definitely with you on this one. I've never been done on the bike (although sod's law states that by the time some of you read this I will have been). I think I'm a bit too aware of my surroundings and although I leather it whenever I can (on national limit roads only) I haven't even come close to being clocked.
The nearest I've come in the past five years was in Stafford, but in the car. About three years ago I got a rude letter from the "Life Savers On Duty" telling me that my car had been observed doing 40mph in a 30mph zone - cough the job, pay up now or you'll be in court and because you're OBVIOUSLY guilty you'll be fined £2000 etc, etc.
Well, it was a porsche I had at the time and although I enjoyed thrashing it about where conditions permitted, I would never do so in such a restricted zone. Furthermore, I had a top of the line radar detector fitted which was "always on" and to be honest was bleeping annoying going through town as it was always picking up signals from every which-way, which makes you CONSTANTLY aware of your speed, so I just knew I couldn't possibly have gone over the limit.
So, I responded in the way I would advise ANYONE to respond. Tell them you're not convinced they've got their facts right, ask to see the proof, and in my case, also ask that if I was such a danger as to warrant sending me threatening letters, then why was nothing done at the time to stop my (or whoever was driving my car, or a car similar to mine with a similar registration) 'reckless' behaviour. If they can't be bothered dealing with offences at the time they happen, then why should I be expected to take them seriously weeks later?
So, I was duly sent two photograps, somewhat blurred, with almost meaningless figures on them. Yes, that was the evidence. The back of a Porsche 250m away, then about 350m away with a big "-40MPH" in the top right of the picture. You couldn't even tell if anyone was in the car, let alone identify them.
Immediately, something didn't seem right. There was also a time-stamp on the photos, but in whole seconds and not hundredths, which is what you'd kind of expect when making time/distance calculations, but it was as wooly as that. I went to the spot where my car was photographed, and I measured that road from the point my back tyre was at on the first photo to the point on the second one. Then, I worked out how fast I needed to be travelling to get from A to B in the span of time shown by the times on the photos. It took me about a minute to calculate that my speed was between 18 and 24 MPH (given the margin the times could have been). The distance was so short that even if I'd floored the car, I probably couldn't have exceeded 30MPH in the space.
What I did notice was this; My car was perfectly framed between the legs of a large road sign showing the up-coming roundabout for the M6. It dawned on me that the useless t**t operating the laser had been tracking the back of the car and the beam had passed over the static leg of the sign as they desperately followed me around the curve of the road, most probably in some kind of jealous fever thinking "You'll boot it sooner or later and I'll get you smug Porsche driver". Unfortunately, in their zeal to get me, they didn't think about all the external factors. What had happened is that the laser gun had thought my car had leapt the 50m or so from the leg of the sign to where it again found the rear of my car, calculating the speed to travel the distance was 40mph.
Of course, I took great delight in pointing all this out to the office monkey who was sending me the "YOU ARE GUILTY - Pay up or be fined" love letters at the rate of about one every five days and all I got in return was a single sentence reply: "We will look into the matter and advise you of the outcome".
I've never heard from them again.
My advice to EVERYONE, no matter how obvious the circumstances are, is to CHALLENGE everything that is put to you.