I myself Like variants of the Rattle snake But not the Rattle snake as published(9-14, 23-19, 10-15?) the third move being a bit on the weak side to suit my taste. I would much perfer 11-16 on the third move but all togeter on the 9-14 opening I usually stay with Double Corner Dyke (9-14, 22-17, 11-15, 25-22, 15-19). Tinsley himself thought it was an inferior opening he just couldn't find anyone to prove it to him