Blecka from Ikea makes a fabulous skateboard holder. I'd recommend mounting the hooks to a small piece of wood block then attaching the block (with hooks) to the wall. This will help the skateboard to not rest on the wall directly. Or.... hang the wheels from the hooks. Technically it can hold 2 skateboards if you use it both ways. The hooks were only about $6 at ikea!
Skateboard rack DIY wood holding seven skateboards. It's 5 and a half feet tall 12" wide from 1x8 sides and 1x4 boards holding it together. Holds a ripstick that needed to be 2 1/2" opening, all the other openings are 2" at a 60 degree angle. Feet are 20" long from the 1x4.