FENMEN chief Gary Setchell toasted the biggest victory of his year-long reign.
His side recovered from falling behind after only seven minutes to put second-bottom Harwich to the sword with a polished all-round performance.
Substitute Rory Harper, who replaced the injured Darren Jimson after half-an-hour, led the onslaught with a hat-trick.
Stuart Cobb, Jordan Yong – a player whose display was described as 'exceptional' by Setchell – and Scott Cubberley also found the net as Wisbech extended their unbeaten run to nine league matches.
Setchell said: "It would have been easy to take our feet off the pedal, but we did our jobs properly for the whole 90 minutes and came away with an excellent result.
"Harwich are not the best side in the world but we inflicted them to the heaviest home defeat they have suffered this season.
"We only managed 36 points in the whole of last season and we already have 31 on the board for this season. We have really raised the bar."
Jason Pease also earned high-praise for his display after being recalled in place of Anthony Reeve who missed the match after becoming a father.
Wisbech: Street, Smith, Yong, Cousins, Pease, King, Cobb (White), Defty, Cubberley, Jimson (Harper), Thompson. Unused: Edey.

First Division

BRANTHAM 2
MARCH 1

MARCH paid the price for failings at both ends of the pitch as they were beaten at Brantham.
The Hares were guilty of poor defending for both of the home team's goals before lacking ruthlessness in front of goal when dominating the final third of the contest.
Skipper Luke Pepper did halve their arrears when nodding home a Scott Bogusz free-kick, but stacks of other chances went begging. Michael Ankler, Denny Escorcio and Pepper all fired against the woodwork before Anker saw a last-gasp header cleared off the line.
Escorcio and Pepper both had strong penalty shouts ignored as March boss Jamie Weston was left dumbfounded by defeat.
He said: "We didn't play well for the first hour but we absolutely battered them for the last 30 minutes. If we could have just got ourselves level I'm certain we would have gone on to win the game.
"But we were guilty of missing a lot of chances and making defensive mistakes – two things we can't continue against the better sides.
"We've played five matches against the teams in the top four so far this season and only picked up one point."
March: Heath, Cook, Sutton, Norman (McGeorge), Anker, Roddis (S. Welcher), Bogusz, Richardson (White), Pepper, Escorcio, Brand.