Mavety remained as the Frontenacs head coach at the start of the 2008-09 season, however, after a 5-13-5 start to the season, he once again resigned as head coach of the Frontenacs to focus solely on his general manager duties. Mavety named former NHL player and Kingston-native Doug Gilmour as head coach of the team.
Gilmour had been an assistant coach with the Toronto Marlies of the American Hockey League to start the 2008–09 season. Under Gilmour, the rebuilding club earned a record of 13-27-5 record, as Kingston finished with an overall record of 18-40-10, finishing in tenth place in the Eastern Conference, missing the playoffs for a second consecutive season.