Several years back, another couple went with us to ride the Caprock Canyon Trail. The other couple used Armadillo tires and in 32 miles stopped over twenty times to repair some 30-40 thorn-caused flats. We used Slime. Every time the other couple would have to stop to repair their flat tires, I would pull the thorns out of our tires. At the end of the day, I didn't even have to add any air to our tires. YMMV.