I'm not too sure even this would count Dick. The 28 day rule is a local authority rule (rather than a Club rule) and as i understand it, any structure OR vehicle which is placed on land for more than 28 days is automatically classed as a permanent structure and as such falls within planning rules. I VERY much doubt that you'd get planning permission topermanently site an RV anywhere. You MIGHT get it for a static, but from the description you gave of this area, I VERY much doubt it.I bow to your superior knowledge on CS & CL, rules, Pat - BUT what if you own the land and employ yourself as Warden of the "Open-all-year" site.
You can't go wrong with this opportunity, buy it, if you don't have any then rent some snot nosed kids, empty a few skips, throw a few shopping trolleys around, light a fire for wire stripping, sorted. The authorities will then leave you well alone, you will have rights, you might even qualify for one of their grants