I have told my club that on club rides go on without me. I will get home. I hate being rushed. It's great to change a flat in 3 minutes , if you are so confident. After putting a tire back together quickly only result in a second pinch flat, I demand no one hurry me. "Go on, I'll see you back at the club house. "
I take my time, carefully look for hidden burrs in the thread and put it back together in a careful manner. When the tire is off the rim, its the best time to Assess the wear in the tire for future needs. 12 minutes is not a life time. I hate to see a group about me looking at their watches.