In my experience closer is often easier. There is no manoeuvring so it's not as dangerous as you might imagine. Also since it is a small formation they are all formating directly off the lead which is far easier than being the outrigger in a much larger formation where wobbles are magnified the further out you are.
I'm not saying it's child's play but with practice it's not as crazy as you might think.
Before the critics open up I should also add that I'm not claiming to be as good as these guys and I agree that it is impressive.
BV