Avoiding the Falls

Was just thinking about this last night, alot of times when I go for waves I get thrown over the falls and after that it is impossible to stand up (those of you who have would know what I'm talking about, like trying to stand up on a massive pot of boiling water
). So theoretically when should you pop up on a wave to avoid going over the falls?
I decided I should post on this after I was thrown over a 6ft (quite possible bigger) wall of water into another wave crashing in front of me and was washed about 50 yards or so back into shore.

I decided I should post on this after I was thrown over a 6ft (quite possible bigger) wall of water into another wave crashing in front of me and was washed about 50 yards or so back into shore.