RedactedNarrative: Vessel #1 was returning to the Chippewa Boat ramp after fishing at approx 10:00 pm.  Vessel #1 struck the island in front of the Chippewa ramp, this grounded the vessel on the rocks.  The operator was able to push the vessel off the rocks and make it to the ramp.  The operator was not injured.  The operator claimed a combination of the weather, darkness, and vision being restricted by his bright GPS screen contributed to the accident.