Wow!! That Dollar chart of Prector's is mind boggling!
I think the thing EW has helped me the most is to be able to anticipate channels sooner. I like to play channels, they suit my simple mind. It is nice to get in before the 5th wave, which is when I used to identify them using trend lines only.
Understanding that the corrections are a good time to go flat is another good idea that I am going to try to observe in the New Year.