Now those extenders are interesting thank you Graham. It should be relatively easy to devise a system that will get fresh air through to the cockpit and only use the extenders on hotter days. This weekend, for example. the forecast is 34 deg C at home, an hour from the coast, and we plan to go along The Great Ocean Road in Western Victoria where it will be in the 20s, so using the extenders just to get south would work well.
