Manston will never work, never did and never will again.
9300 supporters of 'Save Manston Airport' does not equate to 500,000 passengers plus needed nowadays to make an airport viable. Some will put that figure higher.
Many an old airfield has become a successful technology park, Portsmouth, Christchurch and Harwell to name three. So which you rather have an half empty airport costing £2.5m a year to prop up or a business park costing nothing to the local taxpayer even if its vacant.