Hart (6-5, 285, 5.1) visited Auburn this weekend.
"It went good," Hart said. "I enjoyed my visit. The big thing that stood out to me was how good the people are there and the family atmosphere they have. I got to spend time with Coach Tuberville and got to know him a little more."
While Auburn was going to be Hart's last visit, it appears he will now take one more trip -- although it will be a short one -- before he decides.
"Coach Tressel has been here. He came down for one of my all-star games. (Assistant coach Luke) Fickell is recruiting me. He gets down here a good amount."
Hart said he hopes to have a decision by Jan. 28.
"As it stands, I'm supposed to go to Atlanta and announce my commitment on the 'Countdown to Signing Day' show," Hart said.
Hart is ranked as South Carolina's top prospect as well as the nation's No. 2 offensive lineman and as the country's No. 27 overall prospect by TheInsidersRecruiting.com.
Meanwhile, Walker (5-11, 195, 4.45) remained in Columbus on his official visit to Ohio State.
"I know he is having a good time up there," said Walker's father Jimmy Walker. "He won't be home until tomorrow, but even then we will be turning around and going to Alabama for a visit there. He won't be back until Wednesday.
"His mom went on the visit with him in Columbus. He went to (the OSU-Minnesota) basketball game yesterday."
According to his father, Walker was to meet with Tressel tonight upon the coach's return from Hawaii and the Hula Bowl.
"I know he was looking forward to seeing Coach Tressel again," his father said.
Walker saw Stanford last weekend. After he sees Alabama, he is due to visit Notre Dame Jan. 23. He may visit Arkansas Jan. 30, his father said. Walker told other sources previously that Notre Dame held a slight edge for his services.
Walker helped Buford win a third straight state championship with a 31-3 win over Charlton County in December. The win was Buford's 45th in a row, capping a perfect 15-0 season.
Walker also made history in the victory, ripping off a 35-yard touchdown run with 10:01 left in the game. The score was his 46th of the year, setting a new Georgia state record and breaking the old mark held by Herschel Walker.
Walker ended the night with 211 yards, giving him 2,408 yards for the season. That follows his junior year, when he had 1,986 yards and scored 26 touchdowns.
Walker, ranked as the nation's 26th-best running back by TheInsidersRecruiting.com, is also a strong student with a 4.0 GPA and an SAT score in excess of 1100.