One problem with boycotts that's been identified is that if there isn't a massive uptake on this - not unreasonably, as many people still want to go and show their support for the team itself - Allam will claim it as evidence that most aren't bothered about the name change.
This is true. Fans want to see their team, even if they dislike the ownership. To my knowledge there has never been a successful boycott of a team in the top 3-4 tiers of the English football pyramid. The best alternative is to remain as vocal as possible and find ways to prove that large numbers of fans are indeed in opposition to Allam's plans. Allam has the better hand in the short term, but - as always - the fans will outlast him in the end. The question is, where will the team be when he goes?
By the way, I don't know if I've mentioned this before but there is an online position and we're inviting fans of all clubs and nationalities to sign it. I normally don't place much truck in petitions - certainly, Allam is non-plussed - but we're going to have to show the FA the numbers opposed to this and a petition is a good way to do it. Anyway, here it is...
Petitiony-woo
Done. 6,000+ signers so far. I'm skeptical of petitions myself, but they don't hurt.