Thanks for the heads up. Hope you find your stuff, or some karma sorts out the perpetrators.
The river has been trouble free for a while now, so a shame to hear it has changed. There is always a bit of ebb and flow (excuse the pun).
I know of two live aboards who aren't on the river currently, one who moved off permanently, and one who is on the hard currently doing maintenance. I know the one on the hard has on occasion spotlighted and challenged delinquents in the middle of the night pocking around moored boats in borrowed dinghies. I know there is mixed views about live aboards, b