The 2007–08 season seemed to bring a change to Guy's play, as he started to weigh in with vital goals and impressive performances, finishing the season with 8 goals in all competitions, his best in a season to date. Despite scoring the winning goal in the opening game of the 2008–09 season against Derby County and the opening goal in the following match against Cardiff City, he struggled to continue his positive start to the season and failed to score another goal for Doncaster. In early 2009, Guy spent a month's loan spell at Hartlepool United, but he struggled to make an impact at Victoria Park, and was sent back to Doncaster after he picked up an injury.