ANt T: I know it's difficult not to follow company SOP's and the chief pilot should know better than to allow stab in on the ground. There is no reason whatsoever to leave it engaged on the gnd. If you did it on a moving deck, you could lose the a/c as did the RN in the 90's.
All the amps and motors have a will of their own and consequently cause problems whilst airborne (control malfunctions) let alone inviting those problems to manifest themselves on the ground through choice!!
It's all about husbandry and tidying up the cockpit. Stab out everytime on deck! (Moving or stationary).
PS: Doesn't the S61 from memory, droop its Nr as it climbs into the hover? Mechanical governor etc etc?