The boaters were in a vessel about 400 yards from the Pacifica Municipal Pier.
He suddenly rushed out of his chair toward the witness stand and attacked the victim, punching him the head 3 or 4 times, prosecutors said.
Police are warning area residents to keep their vehicles locked.
Officers with the Pacifica Police Department responded Wednesday at 8:30 p.m. to the Walgreens.
Meanwhile, a search for possible missing boaters has been suspended.
Fire officials say the resident also suffered from smoke inhalation.
It was just before noon when the allegedly drunk man crashed into a parked car in town and then fled the scene, police said.
A 26-year-old learned his fate this week after pleading no contest in the case.
Prosecutors say the victim had a "shoe imprint on his head around the eyes where he had been stomped by his attackers."
UPDATED: Police said the school is in "secure campus" mode.
It took fire crews more than 6 hours to ensure the fire was fully out due to possible hoarding conditions.
Police say the clerk was held up at gunpoint.
Police sad they are conducting "bicycle safety traffic enforcement operations" throughout the month of May.
Officers arrived to find a man suffering from at least one gunshot wound.
"The working proposition for the motive is, 'If I kill him and get him out of the way...'," SMC DA Steve Wagstaffe said.
The incident began around 11:05 p.m. when officers and fire personnel responded to a report of sailboat in distress.
Police say the woman was involved in a major crash that blocked Highway 1.
The man was publicly identified by the coroner's office Monday.
CHP officials said that a witness saw the crash and called 911 to get the driver help.
Sheriff's officials say a woman was rushed to the hospital following the Friday morning incident.
Parents and care providers are being encouraged to enroll Pacifica residents of any age suffering from a disability.
Police and FBI officials say a serial bank robber who'd been hitting up Peninsula banks in recent weeks has been caught.
A toxicology report indicated the man had a "potentially toxic level" of meth in his system when he was restrained by cops, the DA said.
Police say the man was exposing himself and taking photos of children with his phone.
Officials said the woman's car landed upside down on the beach below.
The man was arrested nearly a week after the incident.
The man was arrested following the alleged incident.
Police say the man held a clerk up at gunpoint this week.
Police say the person crashed into a building and then two walls before he was arrested.
Police say the duo got away with cash in the crime.
Officials are asking those who may have been driving on Hwy 1 near Pacifica the night of Feb. 13 if they saw anything suspicious.
Pacifica police say the driver is cooperating with their investigation.
Officials said the man was trying to rescue his dog when he tragically fell to his death.
Police say the driver was in a BMW X5.
It's been more than 25 years since the brutal case happened, and now a suspect is facing charges.
The man is accused of shooting his pregnant ex-girlfriend in the head in Pacifica.
Officials say the police officer was taking part in a training escort in Daly City.
CHP officials say the man was thrown approximately 30 feet as his vehicle rolled.
The California Highway Patrol says "it appears that drugs and alcohol may have been a factor" in the deadly wreck.
Police are asking for the public's help finding the man who fled the scene.