A watercraft has a hull and a deck disposed above the hull. A ride plate is mounted below a rear portion of the hull. A jet pump assembly includes a jet pump disposed at least in part between the ride plate and the hull. A front wall is formed at least in part by the hull and disposed forwardly of the jet pump. The jet pump assembly is mounted on a top surface of the ride plate via a plurality of resilient mounts At least one sealing member forms a seal between the portion of the jet pump and the portion of the front wall. The jet pump is mounted to the watercraft only via a plurality of mounting points. The jet pump is resiliently mounted to the watercraft via each of the plurality of mounting points.