I worked with homeless people for a few years ga. The nightly soup run was always a welcome sight, bringing hot soup and other food and a supply of blankets, socks, gloves and hats for those whose clothes were damp or in need of replacement. Is there anyone willing to offer access to an outbuilding, garage or shed when necessary? It sounds like your community might be able to give some help, having experienced such a tragedy.
Iam64 I used to visit the Walkden Salvation Army hostel you refer to and I've never seen so many men hovering around outside - they couldn't use the dormitories until nightime then. I hope it's changed. The majority were mentally ill, alcoholic and in such despair.