This Skylane isn't going far powered by a 44 gallon drum! It's an ex jump-ship, as seen by the titles and the home-made step on the starboard wheel. It is currently de-registered but was last registered to an owner in Mackay, Qld. Before coming to Australia in 1969, it was N71849 in the USA.
2KY was a popular music and news Sydney radio station that used VH-EHX for summer shark patrols. Tooth LA is a brand of beer. The radio station still exists but is now devoted to sport and racing. VH-EHX also was still registered in September 2017.