Something that comes to mind: do designs with no tail rotor hover with one or the other side low? I've never flown one, & didn't pay that much attention to that when I had to ride in them - I was too scared to have time to think about it.
I still don't believe you can treat a 206 as freely hanging from the head - there's a lot of coupling present, as you can see when you put the rotor disk forward to take off, or do a turn with forward motion.