I just have to say this to the people who would be worried about using a repaired tyre.. (that hasn't been run flat)
A puncture caused by a nail or screw is tiny, it will go between the metal cords so the only problem is air escaping, the tyre is not weakened, at all... Period. Now consider the patch used cannot come off, and centrifugal force is holding it in place and not trying to pull it off. (Not that this matters as the rubber cement is very strong)
On a high performance car I would have concerns about using tyre with a heat vulcanised repair, but purely because I'd be uncertain how the rubber compound had been affected.
I've patched a lot of tyres, some for very decent cars. I'm a very conciencous (sp?) person, but I wouldn't worry about the safety of the customer even for a second because I know the repair cannot fail.
So what exactly scares some of you about using a tyre that's had a very minor repair done?
FYI this is the plug type patch, as you can see it isn't simply a plug like the temporary repair plugs that can be put in from the outside, these can't come out regardless of speed. For a small nails like some of the pics a regular patch would be more than up to the job though.