FYI, the government can bring a civil suit (as well as criminal, therefore, in the event of the former, a fine, seizure of PWC would be equitable relief on behalf of the government.
I may not know a lot about Sea Doo's, however, I do know a lot about the law being a former law enforcement officer, criminal defense attorney and teacher.
I recall several years ago that the lib's here in CA tried to ban -strokes in Lake Powell, however, even though the lake was a source of drinking water for us folks in S CA, they did not succeed.
With the likes of Barrack and the rest of his liberal jerk pals in Congress, Pelosi, Boxer, Feinstein, Reed, etc., one never knows what they will do next to curtail the fun we have riding our 2-strokes.