Well, over the past three years, I've tried bulldog clips, trouser hangers, stainless film hangers of three different designs as well as clothes pegs of several different kinds, all of which have left marks of various kinds in my film and paper that I just don't want ...
So after reading RR's post I thought for the sake of a few quid, I'll try the dental-xray-hangers - a quick trip to the 'Bay and a batch of developing later it seems I've been given the perfect "solution"
Plus AiPrint's suggestion of a twist is brilliant.
Sometimes it's the little things that cheer me up ...