Hull started his football career at 14 yrs old on the bench, as a reserve offensive tackle for Clark Junior H.S., which is now Crescenta Valley High School ("CVHS"). When in tenth grade, Hull was moved to starting tight-end, and defensive end. In his junior year, as the Falcon team began its first year of varsity football, Hull was moved to tailback by Head Coach Gary Hess, in the Falcon's single-wing offense. He returned the opening kickoff 88 yards for a touchdown the first time he touched the ball in a varsity regular season game and gained 142 yards rushing on just ten carries, not including his kickoff return.