Thats why I carry a 2 mitre length of 12mm wire rope with a couple of eyes on the ends and a whacking big padlock.Lock it to the nearest immovable object and hick away.Used to do a lot of solo touring into remote spots in the before mobile phone days.I used to carry a can of foam as well but the last time I used one it lasted about 5ks,just enough to ride to Woody's Honda at Yong just as they closed.Left the bike there for a flat fix and came back next weekend to get it.Got to make your own luck with flats,sitting on the side of the road with a hopeful smile doesn't do much these days.Any time I stop for a bike in this situation most are shocked a stranger would bother,years ago it was the norm.