This subject comes up often during Line Transects. Most guys who attend the line for the first time will invariably ask this question and what a senior ( most of whom have been charged while on foot)will have to say is this :
1.It is very difficult to judge a Mock charge and actual charge and the one can become another at any moment.
2. Once an elephant charges it decides what happens next
. Run and run as fast as you can and if you have enough time climb a tree
3.All other techniques are as good any other. If any one of them saves you it is simple plain luck.
4. The chances that you will be charged by an elephant are very Low if you are careful and attentive. Elephants always tend to give their positions up by making enough noise. Ear flapping, shuffling, breaking branches, rumbling Etc.
5. Even lower are the chances that the animal will come all the way once it charges (in other words mostly it will try to scare you away). Compare this to the probability of being run down on the road every minute after you set foot out of your house in a city. Its probably one to a million.
6. If somebody is not convinced its best not to attend a line transects he can pack his bags and go home .
Of course all the above applies with normal wild elephants and not to rogues.