I'm a patch guy. Don't carry a spare tube. Once got a flat front tire going down a steep hill at speed. Threw my weight back as far as possible and used my back brake only so I wouldn't put any more weight than absolutely necessary on the flat front tire. When I finally got it stopped I had so many pinch flats from riding the rim that I wound up cutting my patches in half so I'd have enough for all the holes. Worked fine all the way home.

Being a minimalist, I can't bring myself to carry the extra tube.