Judging from the negative (or tellingly, withheld) views of those who did go to the meeting, I'd be *very* wary of handing over any more money to, or continue being moored in, PLM.
I've been moored in my marina for five years now and am very aware that I have no security of tenure. Before I took on the mooring I spent a few quid and did a quick search of Companies House to get a copy of the marina accounts, their accounting history and to see who the directors were and if there was any tangle of holding companies involved.
Paranoid? Perhaps, but the way PLM offered a parking space with a "free" mooring would have me deeply concerned. If the Phoenix company subsequently has a similar offer then I'd be looking long and hard at the exit.
Edited because I hate phone keyboards.