"It's because I believe in them."
Before he tried to lure recruits to Cambridge, Mass., or Palo Alto, Calif., he had to convince them to play in Glenville or Montgomery.
"Recruiting doesn't change, either," he said. "You recruit a guy to come to your school because of the relationship you built with him and his family and his coaches. They make decisions, a lot of times, based on people rather than just a place."
But WVU is a very special place to Crook.
It's also a bit ironic to be working for Luck, who was a quarterback for the Mountaineers from 1978-91.
During Crook's childhood days in Parkersburg, he and his father used to watch the Mountaineers on television. He couldn't have foreseen how his future would dovetail with the quarterback he was watching from his living room TV.
"Oliver Luck was the first guy who I knew who he was in a football uniform," Crook said. "I saw him and I knew, hey, that's Oliver Luck."
Three decades later Crook, who is a father of three, witnessed his two sons discover their first gridiron hero. With Crook at Stanford, his boys looked up to Andrew Luck.
"That was a neat experience for me," Crook said.
It all comes back to relationships.
In 1999, Tony Gibson was the assistant head coach and defensive coordinator at West Virginia Tech. Gibson returned to WVU, where he coached from 2001-07, in January.
A month later, Bill Bedenbaugh left WVU for Oklahoma and created the vacancy that would be filled by Crook. That wouldn't have happened without Gibson, who worked with Crook at Tech for one season.
"For some reason, Tony spoke positively about me to Coach Holgorsen," Crook said. "That opened things up. We all felt like it was a really good fit."
One that was a long time in the making.