BMan used the back-and-forth drill in the Soft Draw video and the carry in Never Hook Again. Is the back-and-forth drill good for someone learning NHA? Is the Hurdle drill good for someone learning SD? In Four for the Road, he describes both drills (I think I remember this). I understand that certain components fit better with some but not others, and I want to make sure that I am doing drills appropriate to the pattern.