Does anyone know anything about this system? I cannot find anything about it anywhere. He's trying to sell his system for $35. I received the following email: "Isn't it fun to watch the experts' bidding? They always seem to find the slams and marginal games that most players routinely miss. Well, now you may join them in their bidding success WITHOUT complicated conventions and pages of system notes!! Hi! My name is James Alperin and I am an accomplished bridge player, teacher and director and now serve as president of Unit 531, District 22. I have developed a unique bidding system called "Shamrock." It is an ACBL approved (for use in tournament play) precision-type system. Shamrock is based on a big Diamond it allows you to open all 10 point hands and then quickly describe your values to your partner. I have played it successfully for many years and have had great success in tournament play, including an 83% game."