Hello Allen,
Don and I were in constant communication until his passing around Thanksgiving, 2012. We frequently bounced ideas off each other, sometimes on a daily basis. He had a very inquisitive, inventive mind and was always looking on how to improve existing ideas.
I was just looking in some of my old files and saw that I still have an old spreadsheet of his along with his accompanying explanation.
I use his EZM or Ladder method with very volatile ETFs which tend to bounce around in a Trading Range. One example is XIV, the inverse ETN of the short-term Volatility Index. I use my own version of his method in conjunction with Keltner Channels trading indicators.
If you let me know your email address I can send them to you.
Best regards,
Ray