I'm trying to master a kipping pull-up as a means of getting my kipping muscle up. I've probably watched 20 online tutorials, most of them from CrossFitters, since they're the ones who post the most videos online. I'm having difficulty discerning what exactly the hips are doing and where the power is generated.
Swing I understand. Hollow position at the back of the swing, arched at the front of the swing.
Then: From the arched position, close hips powerfully as you swing back. Some videos (https://www.youtube.com/watch?v=p7q0UhxPdLY for example) suggest that this is what generates the power. Other videos suggest that closing your hips is just a means to set you up for the pop OPEN, which is where the power comes from (https://www.youtube.com/watch?v=4ZJMblG5apg).
So does the power come from the closing of the hips or re-opening the hips? Which part of the movement is the priming, and which part should I make as explosive as possible? Are these two different techniques that are both fall under "kipping pull-ups"? Or is there really a hip opening happening after the closing that's concealed in the videos that don't talk about it?
(Please don't answer that everything should be as explosive as possible - Imagine how jerky and chaotic it would be if your were transitioning from arch to hollow to arch as explosively as possible. You'd be flopping around like a fish instead of actually swinging.)