I’ve seen different ones. I don’t like any of them. Specificity is not what you should be looking for in the gym as Charlie explained on numerous occasions. The high incidence of injuries in Bosch’ group also illustrates it perfectly. If you want to get a rough idea of his gym work have a look here on the website that I cited earlier in this thread. I’m not saying that it’s all useless work or dangerous but I question the need for it and the risk/benefit ratio. The exercise you’re looking for is not shown on that website BTW.