A Liam Hearn double helped Grimsby beat Ebbsfleet in an exhilarating encounter.
The Grimsby striker lashed in early on and Will Antwi converted Michael Coulson's cross to double the lead.
Hearn slammed home his second from close range before Grimsby keeper James McKeown's clearance ricocheted in off Fleet midfielder Nathaniel Pinney.
Yado Mambo headed in Michael West's corner but Coulson's close-range effort restored the hosts' advantage, who held on despite Ricky Shakes's late score.
VIEWS FROM THE DRESSING ROOM
Grimsby Town joint-manager Rob Scott told BBC Radio Humberside:
"For 80 minutes we were so comfortable it got too easy, I thought.
"It looks closer than it was but at the end of the day they scored three goals and we scored one more.
"I don't want us to turn into Kevin Keegan's Newcastle because they'll see me to an early grave but for Christmas I'd certainly like a few 1-0 victories."
Ebbsfleet manager Liam Daish told BBC Radio Kent:
"It was a crazy game. It was a horrendous start from us and we clawed ourselves back but the fourth goal really made it difficult.
"I thought there was a big decision that went against us, a blatant penalty. Talking to the Grimsby fans and they said exactly the same.
"To me, it's either a sending off or the referee has to book him for diving and he did neither."