Defender Hill replaced the injured Neill Collins and helped the Blades keep a clean sheet.
Maguire told the club's official website: "With Collo forced to miss the game, me and Matt teamed up at the heart of the defence, we have played together before and I thought our partnership worked well.
"Matt plays a lot differently to Neill but they are both experienced professionals who have played at a higher level. Hilly always looks comfortable and he has excellent positional sense."
Manager Danny Wilson was forced into making a change just 11 minutes into the game, with goalkeeper Mark Howard succumbing to a thigh injury and having to be replaced by Long.
"George was fantastic and he has a bright future ahead of him," Maguire added. "He fitted straight into the game after Mark was taken off and made a great save from Kevin Lisbie. I played with George for a long time through the academy and if he retains his place I am sure he will perform admirably."