Gleaming the Cube

Gleaming the Cube is a movie starring Christian Slater, Steven Bauer, and Richard Herd. A young avid skateboarder uncovers a government conspiracy while investigating his adoptive brother's mysterious death.
An Orange County teenager's carefree life of ditching class and skateboarding abandoned pools comes to a screeching halt when someone close to him dies. The cops rule the death a suicide, but the bereaved skater believes he was murdered. It's up to him to solve the case, with a skateboard.