A once-thriving family attraction which has catered for tens of thousands of people has announced a shock closure. Flip Out at Chatham Dockside revealed its last day of business was Sunday in a surprising announcement which left some customers reeling. It said: “It is with a heavy heart we announce that Flip Out Chatham’s last day of operating will be 4th February. “We would like to take this opportunity to thank all our wonderful staff and customers for all your support over the years.” The £1m trampoline park opened to the public in November 2016 with owner Mark McGill announcing he had team…