I haven't flown them, but I'm pretty sure the Westland Lynx has a negative pitch range to allow them to hold it down on a pitching and rolling deck until they get the lashings on.
Perhaps some pussers would like to elaborate on the accuracy of this?
Re the 'tractoring' down, I can't see that it would ever be necessary or desirable in flight. If you need to descend really quick, collective down and tight high AOB turns works a treat, caution the rotor revs but.