Although probably struggling to give Roos a passing mark for their uninspiring success, Hall was later blissfully unconcerned about the merits of the performance.

"We won ... that's all that matters," Hall said.

"I wasn't worried about how we did it, so long as we won.

"This has cemented our spot."

On a day when Roos looked well short of team in contention for the Group Nine premiership, Hall was able to savour the most significant win of his initial year in command at Roos.

After a season of mixed results, Hall has succeeded in steering Roos to six straight victories - and a secure place in the Group Nine finals.

With a last round game to play against Tumut at Twickenham on Saturday, Roos have sewn up fifth position at least for the playoffs.

Hall, however, is definitely not just about to settle for second best.

"We're in the finals, yes, but we still finish fourth, and get a home game," Hall said later.

"Obviously we need to beat Tumut, and Gundagai has to beat Young."

Heading into the final round next weekend, Roos are securely locked into fifth on 22 points, but clearly have Young in their sights.

The Cherrypickers are currently fourth on 24 points after thrashing Tumut 68-4 at Alfred Oval on Saturday, but will slip to fifth if they lose to Gundagai at Anzac Park on Sunday.

For Hall, the prospect of snatching fourth on the table is a mouth-watering prospect.

"That'd mean we get a home final (at Equex Centre)," Hall said.

"Obviously we can't get ahead of ourselves. We just have to beat Tumut."

Taking stock on Saturday, Hall admitted the circumstances of Roos seven tries to five triumph mattered little in the final wash-up.

He was also at pains to stress that Cootamundra had not just given Roos the points on a platter.

"It was a physical game, they're always physical games against Coota," he said.

"It was hard work."

Not for the first time, Hall's assessment was certainly on the mark on Saturday.

Roos and Cootamundra traded tries in the first half before the Wagga team grabbed a 16-10 lead by half-time.

When Cootamundra playmaker Matt Forsyth and co-coach Grant Boyd combined to send fullback Jordyn Ballard flashing over for a try in the 47th minute, the Bulldogs were back on level terms again - and Roos were talking a tightrope.

Amid fumbling and bumbling from both teams, Roos eventually found the perfect player to set the record straight.

Star hooker Glenn Dumbrell seized the moment to zoom over from dummy half for a try in the 53rd minute before giving the last pass for Hayden Davis to blast over five minutes later.

By the time Forsyth was sin-binned for dissent 90 seconds later, Roos had the Bulldogs on the ropes.

Another blistering Dumbrell try in the 64th minute - he repeated his earlier effort - had Roos bolting with a 34-16 lead - and into the finals.

Minutes later Troy Dumbrell carried on the family tradition by racing 25 metres for a fabulous try off a Mitch Blackstock pass to extend the advantage to 40-16.

Refusing to lie down, the Bulldogs jagged two later tries, but it was too little and too late.

Hard hit with injuries, Cootamundra had seven first grade quality players on the sidelines on Saturday.