Ingold is here to make the run game meaner. A good fullback does not need a box-score explosion; he needs to find linebackers, finish blocks and give the quarterback a safe outlet when the defense overplays the run. He has the experience to do that, and his presence lets the Chargers keep a real physical package available.
Strengths: Veteran lead-blocking technique, short-yardage toughness and reliable situational receiving. He understands the unglamorous details that make a run concept work.
Weaknesses: His offensive value depends on personnel usage because fullback snaps are naturally limited. He is not a dynamic volume receiver, and age reduces the margin for decline in a highly physical role.