As someone who was "in the know" with that class, this is a fact. DRob made a huge impact on the Chicago guys in that class, even though we were THT's second choice.
The head coach is involved in all recruitments, but it's the assistants who do the main work.
Of course assistants do the main work. That isn't something Prohm invented. Matt A. had a huge impact on recruiting under Fred. But when someone has the nerve to mention Steve's good years the rebuttal isn't "oh yeah....with Matt's recruits" is it? It is always "Fred's recruits".