I have read on some other forums about the alko atc and that some people want one for a bpw chassis. LEAS stabiliser is pretty new on the market and will fit any chassis including horse boxes and trailers. It applies 20% of the braking power once a snake movement of the caravan is detected. More info is found here http://www.conrad-anderson.co.uk/LEAS-Stabiliser/anti-snaking-device.htm