I have viewed the JFK Jr. thing as implausible and kind of a distraction, but I found this dig very interesting. Still not convinced, but it's got my imagination sparking a little.
https://www.youtube.com/watch?v=1LWbN_LjCo0
Note: Apologies if this has already been posted, examined, debunked, etc. I try to stay current on all notables and other relevant posts here, but like many of you this is a very part-time job for me.