Blinded very badly if temporarily on towpath last night. One of my regular towpath people had the sense to cover his light as I was hanging over the parapet on the aqueduct t escape his searchlight beam. There is almost no dipping of these lamps anymore. Plus they are far brighter than previously.
Interestingly the bracket on my Aldi lezyne copy USB chargeable lights with replaceable rubber O ring has an asymmetrical bracket which tilts the beam down (or up if you put it on the wrong way or want to tilt it up eg back light).
EBC have big and mildly informative article on lights rather than just advert just now. Clipping them on to bag or helmet not same as attaching to bike which is the legal requirement it says. I have commented that they should stock brackets that force the light to tilt Down.
The aircraft landing lights were fun but very many unilluminated dog walkers, dogs and runners. The boats all had their lamps on.