00,
The hover trim has been around for many a moon: 10% cyclic authority for the winch operator to move around when in auto hover. Originally fitted to the Sea King HAS1, before which (as sycamore mentions) all fine trim was at the pilot's whim.
RODF3, 2 metres seems a very coarse measurement? ISTR yards for horizontal movement, feet for vertical, but bananas and apples as we all well knew! All according to CPO (Aircrewman) Mooney: he of the broad Oirish accent, and the rather attractive daughter
