I do agree on the shovel with a so-called hair on it, I don't think that actually happened, JMO. I'm not sure what to think of the Silver Dollar except that according to Klein someone in the party was there, if not all four, then it seems more likely to me, IMO, that it was JM and VDK. During that time where was Deorr and who was he with ? All we know is children aren't allowed in the bar so he wasn't there.
If he went on up to camp with GGP maybe the plan was for him to sleep with him in his trailer. That actually makes sense to me if mom & dad stayed out late having a couple of drinks as an older GGP probably turns in rather early, closer to a toddler's sleep schedule. Given this scenario, could it be that when the parents made it to the campground, the baby was already down for the night in the trailer.
I keep thinking of Klein's statement in his KID interview, and don't quite know what to think of it. It's at around the 2:30 - 2:40 mark :
http://590kid.com/2016/01/28/former-deorr-kunz-investigator/