Thanks everyone for the suggestions. I do 'lift the dot' but find the ones in the middle of the windscreen particularly difficult and unyielding. I have tried WD 40 and Vaseline (please no comments) but with little success. The Mog is a 2002 4/4. I am away at present but will try some of the suggestions when I get back.
I wasn't quite sure about how the swivel pivots worked. Do you fit/remove the hood with the frame down so there is less tension?
Maybe speaking nicely to the hood will help too!!! My language when it is difficult to undo may be scaring it.