I did see someone with a tripod yesterday at Cosford, in the erm....Naughty field.
Not sure what camera it was, possibly one with a name beginning with a N, and what looked like a 50mm on it, anyway, I struggled getting a decent sized image with 600mm, so I doubt that his results showed the colour of the pilots eyes. Then again, if he was happy with the results, then so be it. Anyway, my point is that in his case, a tripod was an utter waste of time, apart from when the Typhoon appeared, the light was good enough to hand hold and the tripod was just clutter for the sake of it.