For positions like RB and WR that's the key. Those position groups HAVE to be your recruiting work horses - they're positions are relatively easy to coach & develop. Their value is the nonstop hours they put in on the recruiting trail. And the connections they have with HS coaches in key recruiting areas (ie DFW/TX).
This is why Mickey Joseph was such a good WR coach at LSU. For stud WRs he had like Chase and Jefferson, it's not like he was coaching them w/ mind blowing tactical analysis and strategy tips. 90% of MJ's value was GETTING them to LSU. Yes, he coached them up too, but the majority of the work is getting them there and putting them in positions to succeed (QB, OL).
Look at Wisconsin's RB situation. Anyone find it odd that they always have brand new RBs right out of HS who tear the league up at 17-18 yrs old? They must have a wizard at RB coach!!! The reality is, 90% of the battle is FINDING the amazing RB HS prospect and getting him to come to Wisconsin. Allen and Taylor were both like 17 yrs old when they were torching B1G defenses. They hadn't even been ar UW long enough to GET coaching lol. I don't even know who Wisconsin's RB coach was and neither did 99% of CFB fans.