RedactedNarrative: Vessel 1 was pulling a tube with 9 total people on board the vessel.  4 POB were in the front of the 15' vessel, restricting the operator's vision.  Vessel 1 stopped to let a vessel pass on his port side.  
  
  Vessel 1 then came up to plowing speed and struck a PWC, ejecting 3 POB into the water.  Vessel 1 operator never saw the PWC and thought at first that he hit a submerged stump.  Vessel 1 assisted the PWC by towing it in and taking all 3 POB to Huron River Valley Campground where EMS was standing by.  2 POB from the jet ski were transported to the hospital and treated for minor injuries and late released.