ROCK ISLAND -- Mo likes to twirl fire. A red stripe crosses her face like a mask. The words "Kill Your TV" are written in black from forehead to chin. What appears to be a red nylon bath puff is strapped on top of Harrison's head, like a rooster's comb. It matches his red cutoff T-shirt. "Turn Off Your TV" is in black on his right cheek. He sits on the upper stage of two handmade pontoon boats, strumming an acoustic guitar and singing. Bare feet dangle over the Mississippi River. Sunshine and blue skies welcome their journey here. "Harrison...