When I was in high school, my coaches would take a proactive approach and take me/us to certain camps for recognition. They would also send tapes out to all of their coaching connections throughout the country to help "promote" their student athletes. The coaches would let us know what schools the tapes were sent (Usually every school in LA.) and whether or not they actually spoke to the college coaches or not. If an athlete is THAT good and a coach does the proper leg work, he will get noticed and offered. No need to rely on the scouts/rivals/etc's of the world.
FYI...Your son is big, he tends to eat every piece of food we have out at our tailgate on Saturdays w/out taking a breath...HAHA
It'll work out man