I carry a piece of old tyre (1-1 1/2inch or 30mm ) as an emergency boot for those unexpected incidents like yours Basurablanca.
At least I will make it home, because if I don't block that hole while on the road I know for sure I will have another blow out.
I also agree with the others- if it is a big hole and you ride fast- just ditch the tyre.
$$-ouch!!