DaveW is pretty close to the mark.
In the 80's & 90's during the week before the Middle Wallop Air Day a competition was held. The Gazelles were used by Austrailian Instructors on exchange at Middle Wallop.
The competition involved a Navex, maneouvering a bucket on a rope and many other activities around the Wallop area. The last day (Friday ) was normally a contest to see who had the best turned out helicopter.
Although the Austrailians borrowed the Gazelles for the competition, the New Zealand Air Force flew in a C130 the week before, inside which was a UH-1H and they used that in the competition.
Hope this answers your question HaveQuick2.
HM