Plans have been submitted for an “inflatable aqua park” and an observation deck for cold water swimming at Kent’s largest shopping centre. Hangloose Adventure, which already runs various adrenaline-fuelled attractions at Bluewater in Greenhithe, is behind the latest proposals. Their application to Dartford council seeks permission for a “cold water swimming” route for no more than 30 people at a time, marked by buoys with exit and entry points, to run from 8am. The leisure company also wants to construct a floating observation deck built on the lake in the style of existing structures with cap…