Hi OP -
You may want to check out a post I made
here. There are 4 links to threads discussing WA/WB, and then the bottom one (don't be fooled by the post name), is a great resource where Shillx gives an explanation and example of 5-6 different lines he uses.
I once read a great explanation of the stop and go by Nate tha' Great, but I can't find it right now. I will edit / re-post if I find it later.