well the term coerce goes beyond a coach being just a coach that is from and has an allegiance himself to a University. My dad could fit into this category as he is a State grad (BA and MS) and has been a 1A or 2A coach for the last 25 years. No special rules apply to him as for coercion but his kids do know of his State fandome through his talking, attire, stickers on his truck, and where he goes to see games 4 times a fall. I don't think that can hurt at all. And I know when I go with him to a game through the pass gate he has to sign the "no extra benefit, etc, etc" thing.
I also think that the fact +!!# has a "pipeline" from SPanola and Madison Central b/c their coaches is probably somewhat similar to the one's we have scattered around the state as well but are not as well known as SPanola has dominated the last decade.
Also as a frame of reference there is one kid from my dads school currently at State, another who is probably going to Ole Miss this next time around, and over the years he coached several that have played at smaller D2 and JUCO schools and some track kids to D1 schollys and the only thing he ever saw that was intriguing was something an Ole Miss coach did that was permissible on an official visit but not an unofficial visit. After asking the next day it was the official visit the coach was on so no big deal. And dad has never been approached with anything untoward but he has never had a super highly ranked kid as a head coach.