The Australian was in blistering form as Matt Peet's reigning champions rendered their golden-point loss to Leigh a distant memory, crossing eight times in total with their score supplemented by 14 points from the boot of Adam Keighran.
Wigan's win was all the more impressive given another encouraging display from the hosts, for whom it seemed somewhat harsh that they only had Lewis Martin's try early in the second half to show for their efforts.
Wigan's 22-0 interval lead did not tell the whole story of a gutsy first period in which the hosts showed plenty of resolve but were let down by too many handling errors at crucial moments.
Arguably all four of those early efforts came about a little too easy, as the visitors' speed in transition enabled them to ruthlessly exploit spaces in their opponents' line.
After a couple of early warnings, Wigan opened the scoring in the ninth minute when Liam Marshall kicked from the left and Field darted behind the Hull line to convert the simplest of chances.
Hull responded well and Tom Briscoe just failed to send Martin in from a bobbling kick on the left, but the visitors doubled their lead after 24 minutes when a superbly weighted pass from ex-Parramatta Eel Bevan French sent Abbas Miski trotting over on the right.
Hull, coached by Australian John Cartwright, lost Ligi Sao to a serious-looking injury just before the half-hour, then a lapse in concentration from Hugo Salabio was exploited by the visitors, Tyler Dupree driving from the scrum before the quick-thinking Tom Forber sent Patrick Mago bustling over from close range.
Field whizzed on to a Harry Smith kick to score his second just before the interval, but Hull came out for the second half firing and after Field had switched to electrifying defence to end Harvey Barron's 60-yard burst within sight of the try-line, the hosts were rewarded when Martin was cleverly fed by former Wests Tiger Aidan Sezer - already emerging as a key figure of FC's expected revival - to cross on the right.
However, any slim hopes of a spectacular comeback were snuffed out in the 52th minute when the Black and Whites opted to go short with the goal-line drop-out, and Forber reacted quickest to barge straight back over for his side's fifth try.
As Hull's resistance fell away, Field's neat lay-off to Marshall created Wigan's sixth try for Jake Wardle, then the Australian eased over for his hat-trick before French sealed the deal with his side's eighth.
Peet praised hero Field and insisted he was "relaxed" about the star full-back's contract situation amid speculation the 2025 Super League season could be his last.
The 27-year-old Australian is under contract until 2027 but has intimated in recent weeks that he will reconsider his position if an opportunity in the NRL comes his way.
"I'm relaxed about it (Field's contract situation)," Peet said. "We've been in constant discussions with Jai and we know exactly where we stand."
"We just want him in the game as much as we can, and we know Jai is at his best when he's around the ball," added Peet.
"He's a great player and he works so hard on his game. His game's built on his combinations with Harry (Smith) and Bevan (French), and timing is a big part, so on that you'll only see him improving throughout the season."
Cartwright admitted his side fell short of giving themselves a chance to back up last week's encouraging win over Catalans in Perpignan.
"We were playing against some really freakish players tonight and we had to be at our best physically and technically, and unfortunately we were nowhere near that," said Cartwright.
In Warrington, Danny Walker and ex-St George Illawarra star Matt Dufty crossed in the second half as the Wolves emerged 18-12 victors in their first Super League home match of the new season.
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