parabellum:
When it is metal, (skids), against a metal heli-deck even with the RPM at idle and the controls frictioned down there is enough torque to cause the aircraft to move
of it's own accord, nothing to do with being,' blown off!
Well gee, I wonder why then, in the 13 years and oh...7,000 hours or so of flying 206's (and Bo105's) offshore onto metal oil platform decks, did this never happen to me? Not once did my aircraft "torque" itself around on its own. If that were the case, one would expect that a helicopter on fixed floats would spin "on its own" on the water at idle. But, um, they don't. They just sit there with neutral pedals. They translate sideways due to tail rotor thrust, but they don't spin. Try it sometime. And water doesn't even have as much friction as metal!
To get a 206 sliding on metal deck, you must be parked crosswind. PHI's wind limit for offshore operation was 40 knots. Let me tell you, that's a-blowing. Through years of experimentation, I found out exactly how much of a crosswind B-models and L-models can take before they slide. If you're dumb enough get out of a 206 that's parked in a crosswind on an wet, metal offshore platform, you deserve your fate.
Parked into the wind, at idle rpm, a helicopter will not move "of its own accord." Not even on a metal deck. Roll your eyes at that, sport.