I'm basing my suggestion on the Gazelle in which I have done OGE hovering and throttle chops but also the Sea King where we trained for forced landing from an OGE hover when we started a lot of FLIR searching.
In both cases, initiating with rapid down collective produced a nose down pitching and a reduction in g.
If this doesn't happen in Robinson aircraft then I'm surprised but happy to have my knowledge improved - not that I'll ever get in one of them again!