I'm semi ashamed to say that I have his book, "Betting on Blackjack;" and as you can guess, don't think very highly of his strategy. While a lot of the introductory verbiage sounds terrific, I found his CLB (Current Loss Balance) betting methods . . . well, it's kind of hard to describe, at least if profanity is to be avoided! Essentially, his methods utilize a mix of positive and negative progressions, which I found fairly sane . . . up to a point. However, once the losses get to that point, the CLB kicks in at the "magic trigger point" calling for a much more sizeable bet. It doesn't risk the entire farm, but in my humble opinion, it's what I call a "hail Mary bet!" Not surprisingly, these bets are usually won in the author's lengthy "random run" examples. Is that enough?