More than 430 people have signed a ‘‘pledge to save Williamstown’’ from being ‘‘turned into the Gold Coast’’. The campaign by Save Williamstown is in response to the Williamstown tower plans for the former Port Phillip Woollen Mill site. As revealed last month by the Weekly, plans submitted to Hobsons Bay Council show 765 apartments and 25 townhouses could be built on the site, which is bounded by Nelson Place and Ann, Aitken and Kanowna streets.