At USC, Hull converted to full-time fullback, working himself into a starting role for the Trojans for three years, playing on two Rose Bowl teams and the 1967 USC National Championship Team. Between his sophomore year blocking for Heisman Trophy winner, Mike Garrett, and his senior year blocking for future Heisman winner OJ Simpson, Hull led the USC Rose Bowl team in rushing avg. with 6.7 yds. per carry, winning the "Roy Bullet Baker" award as the Trojans' Most Valuable back. He was also selected as the Most Valuable Player in the USC vs. UCLA game, while rushing for 147 yds on 14 carries against the Bruins.