the lake area used by adelaide landyacht club is in a national Park, as is most of the access track , but I think part of the access track runs into a pastoral lease. it would be pretty rough going for your Kia and trailer. i would suggest one of the many tidal beaches nearer adelaide would be just as suitable
as far as i know anyone can use the lake gillies area for land sailing,, i am a membe of the adelaide land yacht club all be it a rather new member but as far as i can tell you just go there as long as you don't drive a car onto the lake and stick to the camping area on the side of the lake..... i will along with a couple of other club members will be spending a few days to a week up there late in may when i get back from Cape Yorke, your're welcome to come out if you want on that trip... i'll let you know a week before i go if you want............[}:)]tony