It’s a common lament: Kids today are over-scheduled, over-screened and over-protected. Only older folk can share tales of spending entire days playing outside — not on a team or in a game, but just playing. “Our mom would throw us out the door in the morning and turn us loose all day and say ‘I don’t want to see you back in this house until you hear the whistle for dinner,’” said Chris Castilian, the boss of Great Outdoors Colorado.