i've been at my hardware store for a year now so maybe i can be of some help and give in my opinion. it depends how gritty you want to get into it. you can get as creative as the art that you're putting up really. if you don't care how the wall will look or the overall display, then you can go ahead and use hooks. i'd suggest getting some zinc-plated L-brackets and putting them sideways so the portion thats sticking out is vertical, instead of horizontal as they are commonly used. then you can set the board on them and the zinc and lack of hooks will make it look a little better. you can also get some sort of lightweight wood blocks and screw the board (through the holes already made for the trucks) to the boards so that theres two of them, and use 3m's double sided stick tape and mount it to the wall. it gives it a bit of a 3d effect and the tape comes off the walls without any damage and worst case scenario, the wood may dwindle at the grip tape but its so easy to replace. theres so many options.
imo, it'd be sick to use the wood-mounting but use varying lengths of wood for each board. like the top board would have 8 inches of the wood boards protruding outward, and the one under can be 6, and under that 4in and so on. and if the underside of the wood bothers you, you can spraypaint it or do your own little art to add to the art display.
i'm sorry if it didn't make much sense to you.