What does the chief actually do? Does spotting make the collectables show up, or show up on the map, or if I put a kid up with the chief will they run get something...? I've found collectibles every time I've set the chief to spotting, but I don't know if I'm doing it right - they're often neither rare nor new, and I don't know if I'm missing the one(s?) the chief is 'pointing out' or what.