Carry and pop in a new tube at the roadside, it's quicker than patching. The self-adhesive patches can be a little hit and miss (I find Park Tools ones good) so I only use them as a last resort. Carrying one or even two spare tubes hardly takes up any room on a saddle bag, bottle cage storage or even jersey pocket if you must. The superlight style tubes pack down incredibly small.
The old school glue-on patches are the best. I've never once had an issue with those, but I always patch later in the comfort of home.
Originally Posted by
10 Wheels
I carry 3 to 5 spare tubes. Always patch at home.
Now that's being properly prepared! 😁