Originally Posted by
woodway
Yup. Swap out the tube, patch the old one at home and store it back on the bike. I actually carry two tubes because I double flatted on some glass once. Once a tube gets three patches I toss it on the 4th flat on the theory that it's "used up". Nothing scientific behind that, just a theory.
At home I always put the repaired tube back in the wheel, pump it up and then check it after a few hours. This is to make sure the patch took, every once in a while the patch will fail under pressure even if it looked like the patch was good. This saves me from replacing the tube on the road and then have the patch fail.