Hi Andrew, to answer your question about what folks do when the seeing is crap, two good things to bear in mind are that dimmer objects (such as distant galaxies and nebulae) will be less effected that brighter closer objects (stars - star clusters - globulars etc), and using your lowest power EP will help to reduce the worst effects of poor seeing.
If, even with that, the seeing is still crap, alcohol is probably your only realistic alternative. A single malt whisky is particularly useful in such circumstances.
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