We cannot afford one of the tracker systems at present and therefore we are looking at a strong deterrent like a good wheel clamp that is reasonably easy to fit. We did look at the SAS Gridlock wheel clamp and while it looks good it also seems a bit cumbersome to fit if you caravan does not come with receivers. The caravan is a twin axle and we would like to make it as difficult as possible to any toerag that tries to nick it. As it is my spouse that has to fit the clamp, the Milenco is definitely out of the question however the QD may be okay. I have seen the Bulldog Centaur Wheelclamp but has any one experience of fitting this clamp. At the moment we have a Euroclamp which will take about 60 seconds to remove I guess.