At approximately 1300 Operator headed into the Cherry Glen boat ramp at Saylorville lake to pick up passengers.  Operator drove through an area that was marked with hazard bouys in the water and struck the break water that was just under the surface of the water.  Operator started that he had been going through there all summer when the water was higher.  This damaged the hull by gourging a hole in it and scraping the hull and damagin the fiberglass and the impact damaged the lower unit and prop of the boat.  The hazards were marked with bouys and there were posted warning on the boat ramp docks and at the fee booths.
Ankeny                        