Skid height has got to be irrelevant to the GE question (although v, relevant to other landing considerations).
Consider:
Same helo with alternative skid gear, eg Bell 206 with hi- or lo- skids. Same engine, rotor, airframe and drive train. Changing the kids ain't gonna change the DISC HEIGHT (or eyebeall height)at which GE becomes useful, 'cos the rest of the helo (to be anthropomorphic) doesn't know what skids you're wearing today!
[This message has been edited by teeteringhead (edited 27 December 2000).]