As someone mentioned, New Brighton SB is in Capitola and is only $35 a nite in the standard sites. Reservations at:
New BrightonYou can park on the street for the night and move every day in Santa Cruz, as long as it isn't posted for no overnight RVs and the neighborhood is more commercial than residential. The west side of town has some commercial parks. You may get a knock on the door in the middle of the night tho, its not against the law but ya know how that can go.
2005 Minnie 24V
Family of Four with lots of toys!:B