Rather than trying to fix a puncture after it has happened to the rear tyre (not an easy task in that position) a better idea is to prevent the puncture in the first place by using a puncture preventative such as OKO, Puncture Safe or Auto Seal. Apart from the difficulty of repairing, a rear wheel puncture it is not something you want to happen from a loss of control perspective either. The other bonus is you don't need to carry the repair kit.
Agree on the prevention part. But I guess that carrying an extra puncture repair kit with the small tyre inflator is a plus. And under the bonnet, it doesn't take that much space.
Have you filled the fron tyre with a puncture preventative too?
