Hi Stu, it's: 420mm, f4, 1/500th, ISO200, hand-held with image stabilisation (over guests' shoulders), full-frame/un-cropped.
When it comes to photographing Hares in general, the approach I choose largely depends on the Hare and the location. Some you need to stake out with a hide, some I can crawl on my belly SAS-style and get to within 20 feet (bearing wind direction in mind), and some locations you can use a car as a mobile hide. So no fixed method buddy.
Yes, they can be facing the wrong way at times but perseverance always pay with wildlife. The more you learn about their habits, the more you can predict their habits and where to place yourself for the best outcome.
Hope this helps!