Thanks for the replies. Of course he knows what to say (a thanks but no thanks) but wanted to hear any nuances given the HC is well connected, as this is a school that seems to be at all the high academic camps and showcases. We know the HC is extremely well connected from his background and from seeing him at these events this past summer.
When I said he had zero interest in applying there, I meant zero interest, not even a sliver of interest. No need to visit the campus. He does have offers from schools he is more interested in, but even if he did not, he would still not want to go to this college. With his grades and scores, he prefers other schools and will take his chances. We have had these discussion in this forum before (4 vs 40 years, better love the school if no baseball, etc). There is no need to keep the door open for this school, it is all about being honest without pissing the guy off and belittling the school in any way. One honest, yet polite, out may be that they do not offer what he may want to study. Which is what he told the RC back in July...
There were a couple of schools giving my son a time limit to make a decision at a point where my son wasn't ready to do so. He ask me how he should handle the response as he didn't want to burn bridges, but he did have other options and was still looking for an offer from his "dream school." And since he really had no choice but to say no thank you, having other offers on the table, went along with responding with what I suggested . . .which was something like this:
"I feel really honored with your offer for the opportunity to play in your program. You have such a good program, it makes it a hard decision, but I must at this time decline your offer. And thank you very much for considering me."
Since the coach was expecting a phone call from my son, I wrote this out so he could see it as he spoke on the phone. The coach had a very positive response to being turned down and said he appreciated the way it was done.
I think it's important to show the appreciation for the consideration and acknowledge the opportunity the coach is offering, when saying no thank you.