Again, more useful suggestions to look into, do a bit of research on and think about
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Regarding my clothing getting damp on my recent trip, it was due to a combination of factors. It rained almost constantly for five of the six days, so rain found its way up my trouser legs from damp grass, mud bogs etc and multiple stream crossings (including two up to my thighs in Glen Nevis), up my sleeves due to water running downhill toward my elbow while using trekking poles, being absorbed into my sleeves while putting on and taking off wet gloves, down my neck when it was too hot to wear a hood, and being pushed through the fabric of my jacket at the waist and shoulders while wearing a rucksack. It was a case of delaying the water ingress for a long as possible each day and aiming for warm and damp rather than cold and wet.
Admittedly my jacket is getting on a bit - I have patched it at the shoulder with Tenacious Tape where it developed a couple of holes while practising ice axe arrest.
I have a full length self inflatable Multimat and a CCF, so I will try them together, or perhaps the CCF and and Prolite, to see if it makes a difference.
I will also look into everyone else's suggestions - it's always good to learn from more experienced folk.
I actually hate 'gear' when it comes to outdoor stuff. I just want stuff that lets me get out and about. The trouble is that as my ambitions have increased, my gear needs to become a bit more 'advanced' to match. Not new and shiny, but able to keep me comfortable under more varied conditions. In this case that means suitable for higher elevations (i.e. better quality but also light weight enough to haul up our relatively modest mountains rather than descending to the valleys every night) and also throughout a longer season. This means I'm now sucked into a world of thinking about gear way more than I ever want to. Infuriating!