Here is a bracket I designed to mount a longboard on the wall. Should be used with a washer-head screw and I recommend mounting into studs or at least drywall anchors. The top bracket only uses one screw so the bracket can slide down on the top edge of the board to lock it in against the wall, while remaining quickly accessible to take down and ride without needing to loosen any screws.
The author marked this model as their own original creation.