The Spacemen out-muscled, out-enthused, and outplayed the Magpies and ran in seven tries during a commanding 32-12 victory in front of another fantastic long weekend crowd.

Fullback Creith, back at his junior club for the first time this season following time in the Canberra Raiders system and in the Queensland Cup, and the Parkes playmakers thrived on the immense work done by the Spacemen forwards and those off the bench and had the Magpies on the back foot almost the entire 80 minutes.

Four first-half tries had the hosts up 18-0 at the break and they went on with the job in the second stanza and, much to the delight of the raucous home crowd, the game was as good as over with 15 minutes to go when the Spacemen led 28-0.

"It's always good to do it here this weekend in front of the big crowd," Creith said with a smile post-game.

"You know you get to go back to the Leagues Club tonight and celebrate with the fellas you grew up with and their families and that's what country footy is all about."

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Sunday's emphatic showing followed a gutsy win over Macquarie at Dubbo a week prior and with his side now building real momentum Creith can see no reason why they can't go all the way in 2021.

"I think so. I was thinking it from round one when we got beat by CYMS, I think we're going to be hard to stop this year and the boys are starting to find a little confidence in themselves and that's what you want," he said.

The Spacemen recorded their third win from the first six rounds without Brandon Tago on Sunday while regular fullback Sam Dwyer is still yet to make an appearance this season due to a foot injury.

Creith has no doubt the side will be stronger when they return, with the thought of Tago added to the forward pack which dominated on Sunday an uneasy one for Parkes' rivals.

"It was awesome," Creith said of the win.

"The big boys in the middle, they're just good to watch. I don't have to do too much tackling.

"They're very good and very strong. It's good to have those boys off the bench."

Jordan Pope was a workhorse in the back-row on Sunday while Kelevi Ralulu, Eroni Turagatautoka, and teenager Finnley Neilsen provided real punch from the bench in attack and defence and ensured there was no drop-off.

In what was a sometimes-heated derby, much of the damage was done in the first half as Parkes thrived on Forbes' mistakes.

The Magpies were wearing special jerseys commemorating the title wins in 2016 and 2018 but, not for the first time this season, they were guilty of handling errors and giving away too many penalties.

Ben Maguire, so often a rock for his side, gave away a penalty and then had a knock-on in the first 20 minutes and those led to tries for Parkes' Brandon Paige and Wise Ratudina respectively.

Hooker Connor Farrer then caught the markers napping close to the line and darted over to extend the lead and right on half-time back-rower Jone Yacadrau muscled over and a first successful conversion of the day for Chad Porter made it 18-0.

The Parkes fans, savouring the experience, were on their feet twice inside 10 minutes of the restart as firstly Creith burst through and put former Magpie Bailey Hartwig over with a lovely flick pass before winger Jacob Smede collected a kick on his own tryline and raced 100m untouched to help the lead get out to 28-0.

"I got lucky," Creith laughed off his highlight reel-worthy pass to Hartwig.

"I nearly bombed it. I looked inside and looked outside and there was no-one there but I thought I better throw something."

A deserved four-pointer for Parkes captain Porter was sandwiched by late tries for Forbes through Maguire and winger Henry Willis.

Those were nothing but a consolation for a Forbes side which still has just the one win to its name this season.

Defeated coach Cameron Greenhalgh was again disappointed to see his side hurt itself through errors and ill-discipline but said he's still got the belief the Magpies can turn it around and be a genuine threat this season.

"We've got the cattle, we just need the confidence to get the wins and play as a team and grind things out," he said.

"All the little things we spoke about, that's where we need to get better and we're committed so it's up to us.

"They know that (there's too many errors and penalties) and it's why we're playing like a frustrated football side at the moment. But I'm confident we can come out the other side."