I can't recall where all I've read about it, random books and forums over the years. Been watching a lot of shoot interviews lately from guys around then and they've said a good bit about his actions and behavior. Then you have recorded shit like the OP tape and the conversation with his son about getting a TV show out of the accident that left his friend a vegetable. My dad has even told me about shit Terry Funk said involving Hulk having his mom call Terry demanding money from a show in Japan, pretty funny stuff actually.
I've heard a lot of hardcore wrestling fans shit on Hogan, but never many specifics. I defer to them because I know things get lost in the shuffle, but I also feel that a segment of them (not all) are just petty Ultimate Warrior fans. I know Hogan has done some things I really didn't like (the whole incident with his kid and the boy who ended up crippled, he said something that really irked me), but I can't remember specifically anything other than that.