From Nic Gregoriades:
Hey Guys – here are some in depth tips and techniques I’ve been using to hit the armbar from closed guard lately.
There are some tips for dealing with strong guys with good posture, getting stacked, and when your opponent hides his wrist and you’re stuck in the ‘spiderweb’ position.
For more make sure to check out BJJ Building Blocks here – http://bit.ly/1JuIZWw