The thing about apathy is that … well, nobody cares.
But seriously, this is a special resolution and if you can’t muster 25% of ‘no’ votes from the generally disgruntled, parsimonious, bilious and disaffected in your scheme, maybe the majority of people who do care think it’s a good idea.
But direct contact, flyers, posters on the noticeboard and letters to owners can work wonders – and make sure to include proxy forms. Any new proxies you get will supersede any existing proxies the EC has from those owners.