The Dolphins have won eight straight since a 66-0 loss to Cronulla in round 19, conceding an average of 16.75 points per match.
They beat the Roosters 26-12 in round 26, setting up Friday night's grand-final qualifier at Suncorp Stadium.
Woolf expects Sam Walker to line up after a four-week ankle-injury layoff, bringing "a bit of the unknown" to the contest.
Dolphins co-captain Isaiya Katoa, 22, has 18 try assists in 21 games, compared with Walker's 21.
Katoa's 31 linebreak involvements rank second in the NRL behind Cody Walker, while Sam Walker has nine.
"I certainly wouldn't swap Isaiya for anyone," Woolf said.
Katoa showed composure in his first finals appearance, helping overturn an 8-16 deficit during the Dolphins' 26-16 away victory over the Warriors.
"What impressed me was that he kept his cool regardless of the score and a hostile crowd that did influence some decisions," Woolf said.