Thank you all for the great feedback.
#1 is a turkey - I can't believe I got the colours so wrong. Taking on board your comments I have a new version below that I'm happy with (including no more channel markers).
The first 3 images were buggers to process since all had quite strong haze and no amount of playing around was able to fix it to my satisfaction. In large part that's why I posted these here. These images are ones I am NOT (yet) proud of and I was looking for feedback on what others thought.
#2 - this is not an HDR (sorry Rel) - it's just my PP I guess - I added a grad ND to try and cut some of the haze at the top and may have over done it
#3 - As Moz observed time was the issue for this one. The weather was crap the 2 days we were around the glaciers. This shot was taken inside about a 15 minute window with blues sky and relatively little mist. I have more from here to process yet, but the mist (and haze) was very challenging
#4 - I see a few of you feel the jetty is superimposed. It's not - that's the image after PP but I agree it looks fake somehow. IT may just be too strong a contrast between jetty and lake. I've reworked this one too and it's alos shown below.
And a final comment - while I'm as weak as the next man and make the occasional "vanity" post - the real benefit of this area to me is that it's somewhere I can post my almost right shots to get help on making them perfect. So to those who feel reluctant to say what is wrong (or right) with an image I say - do it - every little bit of feedback is useful.