RedactedNarrative: Operator of vessel #1 was attempting to tie up at dock.  Unable to do so he backed up and attempted to tie up again but struck the dock.  He backed up again and struck vessel #2 tied to a mooring.  He backed up again and hit another dock and proceeded to exit the Harbor but was stopped by the USCG.  The USCG terminated his voyage due to his erratic attempt to dock, he was having trouble standing up straight and had glassy eyes.  He said he had not been drinking but had taken several types of prescribed medications that day.  All 4 medications warned off dizziness and drowsiness.  He was administered a portable breath test and it was 0.00.  He was arrested for boat oui drugs, boat negligent operation of and leave scene of property damage.  It should be noted that in 2008 this operator was charged with negligent operation of a motor boat resulting in death.