Best way to get length gains?

[j123]

Can somebody tell me what the best way to gain length is, i have a feeling it is streching but am not sure.?

 

[EVO]

either stretching or hanging, which ever you prefer

 

[stelth]

Both of these are true, however I've come to believe that after a good stretch session you should jelq, and for length go fast, 1 second strokes would be best.