Hi there John - You are such an encouragement and it is much appreciated! I didn't use a polarising filter but I did expose primarily for the sky; I didn't want blown out highlights as it was the cloud formation which attracted me. Often in such a situation I will stop down one or two stops and work with the shadow areas in PP which are easier to "get back". I quite like the contrast in the shot and feel it carries the dramatic "look" I wished to convey. As you know, quality of shot is important to me but I also feel one needs to express one's "artistic emotions" too and it is not always necessary to be "true" to nature!
Lucky you going on a photographic holiday. I should think about doing something like that, it would be nice to get some cross-pollination of ideas etc.
Enjoy your weekend.
Kind regards Rosemary