A few years ago,my next door neighbor was a 30 year career man with the U.S. Fish and Wildlife Service. He told me that they had over 600 cougers tagged, east of the Mississippi.He told me that every state in the eastern part of the U.S.,except Rhode Island,had tagged cougers running wild.
He would not admit that they were stocked,but if what he said is true,it would seem to me to be the only plausible explanation.
I lived in the boonies in S.Florida for 21 years and only seen 6 of them in the wild,although I have seen their tracks ,while hunting in the glades.
FWIW,
WC