While on paper Wanganui had batting right down to No11 and the track was flattening out, it was the age-old story of the concentration to play this level not being there after the Christmas break.
Renwick and Meiring had no such trepidations, and even though Collier went early to a caught behind off Nick Harding, who also got his partner Dylan Cleaver, the pair settled rapidly into their work and tore into a bowling attack which did not have the services of Ryan Slight and Sam Beard.
Harding's two wickets were the only bright point as he and fellow bowlers Ross Kinnerley, Sam O'Leary, Dom Rayner and debuting Hawke Cup spin bowler Bryant Galpin all were expensive.
Declaring overnight, Manawatu had all day to get Wanganui out and didn't need half of it, as Gaylard grabbed another three wickets, medium pacer Tim Richards also got three-for, and Collier delighted in cleaning up the tail.
There were four ducks in Wanganui's innings, with opener Dominic Lock having a disappointing match, as did Todd Innes, while the recalled John McIlraith had some fight, although top scoring with 28 shows the team's woes.
The team will need another mental turnaround as experienced at the end of last year when an embarrassing second day capitulation to Taranaki was followed up 13 days later by a strong batting and bowling effort for first innings points against Horowhenua-Kapiti.
Wanganui will face fellow minnow Wairarapa at their home ground at Rathkeale College on January 30, before the hardest match of the year against Hawkes Bay back at Victoria Park.
Hawkes Bay signalled ominous signs after they disposed of Taranaki by eight wickets in a low scoring game at Nelson Park at the weekend.