once he's green to you he would never switch to a SIM, but they can still be contacted and visit/be visted by coaches/teams that are human coached. There is a 48 hour period between first scouting reports and first signings which is basically a feeding frenzy. Calmer waters after initial signing. Re phone calls etc, you have to be persistent. I have guys who have declined 5 campus visits but then accept the 6th for no apparent reason.