This is an excellent interview with Floyd Upperman, an analyst who has been using the COT for over a decade, and is the publisher of the book
"Commitments of Traders: Strategies for Tracking the Market and Trading Profitably".
Larry Williams is a long-time market expert and proponent of the COT report. He is also the author of "Trade Stocks & Commodities with the Insiders:
Secrets of the COT Report".