I am making a Spike - BTTF II costume for DragonCon. Thanks for her hoverboard reference photos. Didn't realize there was velcro going across the lighting bolts and question mark. I love DETAILS!!!! and making them happen on my replicas
They dressed the Spike and most of the gang boards in different fashions depending on the type of board and its intended use (foam vs wood, stunt vs hero). One other tell on the Spike board (I used to own an original foam board many years ago) is the length of the question mark is different on the different boards, and they even used different colors/shades.