I'm still in a state of dumbfoundedness about this. I'd read of this case decades ago and didn't feel like it could/would ever be solved. I looked at this thread and/or the one in "cold cases" earlier this week and had the same feeling, only stronger. Then, here it came out of the blue!
I know this may make me sound like a party-pooper, but this huge dose of "good news" and resolution made me wonder more about the "son"
Michael Anthony Hughes.
First off, I wondered more about who he actually was. He wasn't Floyd's kid, so who is his father?
He may be a bad egg, but why would Floyd go through all of the trouble (kidnapping/hostage) to get him Michael back only to take him across the country and drowning him shortly thereafter? That took a lot of energy and audacity, plus it would put him in LE's sights.
Floyd had been so "good" at dodging them regarding his daughter for so long that it just doesn't make sense for him to have done something so brazen.