Grand Haven improved to 2-2-3 on the season. Mona Shores dropped to 3-2-2.
Trowbridge assisted Alli Keyser for the first goal just 11 minutes into the game. Seven minutes later Keyser returned the favor, connecting with Trowbridge to give the Bucs a 2-0 lead.
Just before the clock expired to end the game, Trowbridge struck again off a pass from Sarah Fojtik.
Jordanne Ellingboe and Lindsay Vandermeer split time in net for the Bucs, holding the Sailors scoreless.