Wow this is timely. Just got back from a nice long ride in the sun, and yep, flat on the front. Was slow so I was able to just pump it back up twice and head home (slower than I would have otherwise). I know / am comfortable changing a tube. But I realized I still have some concerns I'm hoping someone can help with:
1) In a race, does CO2 work better / faster / as well as a tire pump?
2) Someone once mentioned about something you squirt into the tube the "seal" it up to get you going without having to change tube?
3) Basically my questions are: In a race, have a flat (likely a basic puncture); what are the best options for not losing a lot of time, but yet not damaging the rim (or myself). Considering my handy little pump stops cost me about 7 to 8 minutes on my ride today, this is something I should figure out ahead of time! And my tube changing skills at best are 10-15 minutes. that's a lot of time when the ride is only 22 miles or so!

Any suggestions would be great!
Thanks...
Jessica