+ k_skate_activity_undefined,
+ k_skate_activity_grind_any,
+ k_skate_activity_grind_boardslide,
+ k_skate_activity_grind_noseslide,
+ k_skate_activity_grind_tailslide,
+ k_skate_activity_grind_back50,
+ k_skate_activity_grind_front50,
+ k_skate_activity_grind_5050