Prior to the Scarlet Knights' practice, the 6-foot-2, 200-pound Carroo sat in on the receivers meeting.
"Coach had a lot of dialogue in the meeting, and the players were asking questions at a very fast pace," Carroo said. "He asks the receivers questions and they always had the right answers. He was actually screaming at me and telling me he was going to need me to suit up (Thursday). It was pretty funny.
"It was good to see coach Fleck's coaching side. I had never really seen that."
Carroo, who is Scout.com's fifth-ranked receiver in the 2012 class, was watching his first college practice, and one thing stood out.
"It's really fast paced," he said. "Every time they rotate it's like staying at a (drill) for five minutes, and they got about 30 minutes of work done. The offensive and defensive linemen were very physical. There were a number of (tussles) because they were getting after it so hard."
Another aspect Carroo wanted to experience what was the interaction between the staff and the players,
"I wanted to see how well coached all the players are, and the chemistry on the team," Carroo said. "It was good. I got a chance to go into all the meeting rooms and I got a chance to see the coaches and I watched practice, and I enjoyed practice. It was very good."
Carroo, who lives within walking distance of Rutgers Stadium, has been to campus on several occasions and already developed a strong relationship with the staff.
However, he also learned how tight-knit the folks are inside the program.
"What I didn't know about Rutgers is the type of team bonding they have, and the coaches and the players love each other and they get along so well," he said. "Rutgers has a saying that it's F.A.M.I.L.Y., which means Forget About Me, I Love You. When I was seeing stuff like that, I released they are a family, and that's pretty important."
Carroo was one of four members of Don Bosco Prep's 2012 class on the visit – Darius Hamilton, Mike Strizak and Elijah Shumate where also there – and there has been talk about all four heading to the same college.
But is that realistic?
"It's not that serious, but we've talked about it before," Carroo said. "If it happens, it happens. We're just happy we all have a chance to continue playing in college. If it came down to it, and we all found somewhere that we really, really liked, then, yeah, it could happen."
Carroo said he does not have a leader, nor a timetable for making a decision.