Thrashin' (1986)

Corey is a meathead who has two things going for him: his physique and his skateboard skillz. His friends -- aka the "Ramp Locals" -- run afoul of the L.A. group "The Daggers" when they come to town to participate in a pool competition and the gnarliest downhill board race THE L.A. MASSACRE. The Daggers take an instant dislike to Corey because he's a threat competition-wise and he's got eyes for Chrissy, who turns out to be the sister of Tommy Hook, leader of The Daggers.

The skating sequences makes this almost watchable. Almost.

D-