Hi. The part that takes the longest for me is locating the hole. My commute home is at night and one time it was raining. It was very hard to find the hole and I didn't have a spare tube, ended up taking my bike in a cab home. My last flat I tried to fix it without removing my rear wheel from the bike. Located the glass puncture on the tire and had an idea where the hole was, problem was my tire was very hard to remove from the rim(25mm). So I took off the wheel and
sanded then applied the glue on the tube. Usually I just wait about 2 minutes, put on the patch. In my experience here in New York city getting flats once/twice a month, 2 minutes is fine. Put the wheel back together then pump, maybe took 15 minutes. The patch manufactuter I'm using recommends to roll right away with your bike as soon as you can.