CC&R dated 1973 says no RVs, trailers, boats can be stored

You probably have a Community Service District that sees to it the CC&R's are followed (when reported violations occur). I would drive around the neighborhood and take pictures of as many RV's, boats and trailers as you can, proving they existence of a need for an amendment to the CC&R's. But, I would also ask my neighbors how they feel about an RV being exposed in that parking area.