Thanks all for the positive comments.
Pete, the mist unit was purchased from Steve Tranter at Model Boat Bits, a very helpful man. I think the unit actually originated in Australia as the paper work is marked Float a Boat. It is the first time I have tried one.They aren't particularly cheap, although cheaper than a steam engine! I found it fairly easy to set up once I got my head round it. It is all mounted on a board which attaches to the boat with magnets, so is easily removable.
Bill, it would be good to get together when things settle down a bit. We could stand one each side of Double Locks and shout across! However I still feel a bit odd going out for anything other than shopping - strange how quickly our attitudes have changed.
Nerys, I know we'd all be interested to see photos of your sharpie. You got me thinking about the collective noun for swans! Apparently there are quite a few, bevy, bank, herd and gargle! I'd never come across any of them.🤔