Fully DIY era. Accounts of Lance Mountain's homemade board differ — Wikipedia describes wood, tubes, and toy-train axles for the Future Primitive board, and cardboard with pencil erasers for his earlier prototype. Home workshops used whatever was available: popsicle sticks, balsa wood, tape, clay. No commercial wooden fingerboard deck existed yet.
Trucks & wheels: No commercial fingerboard trucks or wheels. DIY objects used improvised or fixed plastic components. Martin Winkler is documented (per Winkler Wheels) as making his own fingerboards and wheels by the mid-1980s, though the specific 1987 three-ply detail is community-sourced.