Hi - go gentle, first time poster!
I am a Swindon Town fan, and have been following your trials and tribulations from afar - although more closely given our proximity in the league these days. Back in the mid 00's we had a situation where our existing owner was utilizing a highly dubious character to advise them on the running of the football club, with what appeared to be motives of extracting as much value for himself as possible (his firm provided marketing, the programmes and was attempting to secure ground development for example).
Without boring you on the background, thought it worth advising on what appeared to work in the end in shifting the ground when it came to ownership.
Months of protests were required and in all fairness, on there own they did little. However, the significant change occurred when the Trust gained potential backers to at least begin making public offerings to purchase the club. They did not have millions to invest, more enough to provide an exit strategy and enough experience to pull together a business plan that could sustain the club post purchase. This took quite an effort, and the current owners were not of a mind to engage in discussions - they were not ready to sell, had no plans to sell etc. What it did do though was shift the conversation in the media, asking the owners why they were not getting involved, what were there plans then? etc. It also presented a way out - until this point they had been determined to stay, they had a long term reward they thought they could get by developing a ground, so they hadn't even bothered seeking external investors to buy them out. This shift in conversation appeared to focus them towards a much quicker path to cutting losses and being able to exit the business - and the press coverage made it very clear the club was sellable. It took only a few months after that for outside investors to come forward and make them an offer they felt was too good to stick around any longer for.
The point here was that the protests continued and served as a reminder that they had little hang around for, the work to build a business plan and offer to purchase by the trust changed their mindset and opened the door to others.
You need your Trust to focus almost entirely on the how do we buy them out side, what would make them begin to nibble? The protests can continue to make it clear they don't have a customer base backing them (they don't think of them as fans), it won't make them budge on it's own but it helps make the exit more appealing.