Thanks, Ken. 'Dozens on the wing' sounds like you were in a prime area for them. I, on the other hand, was at the edge of the species range on a small 100m asl location near Durham City and failed in my somewhat half-arsed attempt over 24 hours. Half-arsed because I had no lure, no net and no light trap, so I figured my chances were somewhat low. I did briefly have two fast-moving creatures in chase against the light that were about the right size and too quick for butterflies, I thought? But that was it. Didn't stop me enjoying a fantastic mix of habitats and amazing woodland in an area close to my old home that I never explored in any depth when I was very much strictly a coastal birder looking for migrants and seabirds. My dragonfly year list went from 0-5 in a matter of hours; I had at least ten Garden Warblers singing; and I came across what might turn out to be the first Short-eared Owls nesting in County Durham for many, many years?