Chris Boyd's men were able to put their emotions aside as they hammered the Highlanders 56-20 with Ma'a Nonu, a long-time teammate of Collins, scoring two tries.
Plumtree said the side planned to honour Collins in some way in the future but the details were still unconfirmed.
The Hurricanes will meet the Chiefs in New Plymouth on Saturday night in their final game of the regular season. The match is of little consequence for the Hurricanes given they will top the standings but the Chiefs, who have a playoff berth confirmed, can influence where they finish on the log.
"We know the attitude's got to be absolutely on the money when we go to New Plymouth this weekend," Plumtree said.
"There will be a big crowd up there. We are playing against a great side, a champion side. So attitude is hugely important for us. We know that if it's not right, we'll get a hiding."
Nonu won't play on Saturday as he takes his second rest of the season, as is the requirement for All Blacks. He was meant to rest last week but injuries forced the veteran on to the bench as cover.
Loose forward Blade Thomson picked up an ankle problem in the win over the Highlanders and was still in a moon boot today but Plumtree said he couldn't confirm whether he would be available on Saturday.
Taranaki used to align with the Hurricanes but they switched their allegiance to the Chiefs in late 2013, something which still irks Plumtree who is from Hawera in southern Taranaki.
"I know when I go there, all my mates support the Hurricanes," Plumtree said.
The Hurricanes will get a bye during the first week of the playoffs but look set to host a semifinal in Wellington on Saturday, June 27.