the latest news that I have heard most recently about how to kill a snake when in damzel distress mode upon the sight of one when you have no where else to go is...
1. throw a stone just in front of its head - to distract its attention and divert it of its intention to strike.
2. get a shovel (hopefully one will be close by as if..)
3. hold the shovel above its neck about 30cm from its head
4. drop and push shovel down hard to chop head off or to at least break snakes back bone.
5. this will be enough to stop it from striking and biting but it may remain alive until sundown, but the snake may still move and continue to scare the life out of humans close by.
Extra tips: snakes are like solar systems they warm up in the sun in the morn then lose their energy by night, therefore by night-time the snake will die.
Quoted by my Mum :)