Personal experience weather it be good or bad it was experience non the less.
206 L and B full left pedal to slow the blades no prob.....but tried to pull a bit of collective once to slow the the blades in a jet box holy sheit will never do that again, main rotors went bizzuek, its not a good thing.
Seen military pilots pull FULL collective in 205s to slow rotors not pretty but they did it every shut down, was PNG defence force but.
