I now know what Coach means when he says that we have to prepare the elbows.
PPP, Planche leans, RTO, false grip holds and bent arm hang are really working my brachialis and tendons around the elbow like nothing else. It feels like I am waiting for my elbow connective tissue to thicken and handle huge loads before I accelerate to the next level. My elbow has already improved dramatically since F1, so it must be incredible by F4 and then iron crosses!