While away last week, saw an ingenious way of holding a tv mast to the side of the caravan. They were plastic brackets positioned near the top and the bottom of the van. They held the mast perfectly perpendicular and rigid. Unfortunately, the owner was away at the time, so could,t ask him where he got them from. They didn,t appear to be clipped to either of the awning rails though, just to the van itself. Does anyone have any idea what they are called, or where I might be able to get some.