Unsubstantiated rumors, unless he was doing something of a sexual nature with a minor, it was what it was. Sometimes 17 and 18 year olds perceive stuff that isn't there. Boys are jealous, girls think when you say hi that you are trying to get in their pants.There were also allegations he was trying to hit on recruits girlfriends when the n recruiting trips.
No doubt the dude was a dog by sleeping with 18-23 year old females. Had there been anything done that was illegal, especially with a minor, he wouldn't have ever coached again, especially at the high school level.