Madden, a 6-foot-3 230-pound tight end from Kennesaw (Ga.) Harrison, was invited to the camp by primary recruiter John Lovett.
After arriving on campus Saturday morning, Madden participated in both of the day's sessions working out with Hagen, UNC's tight end coach.
"He's a real energetic guy," said Madden. "He definitely cares about the players and he has a lot of information to give. He's just a real amazing coach."
In-between practice sessions, Hagen gave Madden a one-on-one tour of the campus.
"It was the prettiest campus I've ever seen in my life," said Madden. "It was just an amazing campus."
Madden's camping experience concluded with praise from not only Hagen, but also UNC's head coach.
"I got to meet Coach [Butch] Davis in person and talked to him," said Madden. "He told me he liked what he saw and he was very impressed with how I pursued the ball and played the game."
While Madden increased his stock, his performance has yet to be rewarded with a UNC scholarship offer.
"They're going over my tape and they're talking with Coach Davis," said Madden. "They offered people ahead of me but they're all committed to schools, so I'm number one on their list right now."
Madden, who has yet to receive his first Division I-A scholarship offer, expects to gain a better understanding of UNC's situation this week.
A lot of schools, though, are in the same boat as the Tar Heels.
"I have a couple of schools saying [an offer] is on the way," said Madden. "They just have to go over it with the coaches."
This weekend, Madden heads to Michigan State's camp. He has also camped at Clemson, Georgia Tech, and Vanderbilt.
With several visits under his belt, Madden has started to favor Clemson, Florida, UNC, and Vanderbilt.
"They all have a big team feeling," said Madden. "When you get there, you feel at home.
"All the coaches at all those places are really nice people. They make you feel at home."
In a run-dominated offense, Madden caught six passes for 123 yards and a touchdown during his junior season.