I'm going to probably make some enemies here, but this needs saying. Pro riders with no coaching experience, qualification, training or indeed knack for it, need to stop putting out stuff like this.
In this video we have the legend that is Martyn Ashton explaining how to do rollover drops and something he refers to as "flying drops". Whilst his riding technique is excellent, he, however, goes about explaining how you or I should go about doing it in a manner that is not only contrary to what he is actually doing in the video, but is not at all helpful. It also lurks into the Danger Zone in places.
This is just another way for professional riders to tout their wares (in this case the wares in question is primarily a van), but in doing so they provide a disservice to riders and the people who call themselves a mountain bike coach. There is a big difference between a coach who has learnt the correct teaching techniques and spent time learning how to communicate the correct ways of teaching and a well meaning professional rider who may be a great rider but couldn't explain how he makes his magic for toffee.
This is Ken Doraty. He is a really good coach. He coaches in Whistler every summer and as well as being able to break down the fundamentals in a concise and understandable way, he infects those around him with the stoke factor. Do yourself a favor and stop scrolling through the Chain Reaction website and start looking for a good coach. It is the only thing that will actually make you a better rider. Stop consuming bike bling, start consuming knowledge.