Sort of, although some might object to your use of the word casual there!
The posh and exclusive rowing club which contributes nothing to the area (not that I'm biased but!... comparison to the canoe club shows how it could be done, but isn't) have been pushing for years for a reduction in/removal of the continuous cruisers - people who live in their boats 24/7 all year round but do not have a permanent mooring.
People like my mates. They have to move every few weeks, and they're not hooked up to leccy, water, etc.
It's quite a positive community of people which I believe the area gains from having around.
They do have to pay for a continuous cruising license but it's less than the cost of a permanent mooring.
Permanent moorings are incredibly hard to get, very limited, with endlessly long waiting lists, and not cheap.
Many of the continuous cruisers are long term Hackney residents with roots in the area who have been priced out of the flats and houses.
Many have local jobs, family nearby, and/or kids in local schools. If they can't moor here it will have a massive and negative impact on their lives.
But the rowers complain that the presence of the continuous cruisers effectively narrows the river space they can row along.