Rovers finished the season in 11th place in Super League, just two points off bottom, and open their Qualifiers campaign at home to Batley on Sunday.
“We’re confident,” said Sio.
“We’re sticking to what we know and playing to our strengths.
“We haven’t had the best season with injuries, but I’m backing the boys to do a job like we did last year.
“We’ll be confident going into the Qualifiers.”
Sio is anticipating a tough test against the Bulldogs this weekend, and expects every Championship side to be fired up for the Qualifiers.
“Every part-time team going to come with a tough mentality, and try and do a job on the Super League teams,” he said.
“As a Super League team, we’ll stick to what we know and what’s worked for us over the years.
“They’ll be there doing their job too and coming out of the blocks hard.”
Sio has featured in every threequarter position for the Robins this year, as well as at full back.
Playing in the number one jersey as he does, he sees full back as his preferred position, but will play anywhere he is asked to by his coach.
“I’m happy to be on that pitch with the boys doing my job,” he said.
“There have been times where I’ve had to play centre, full back or wherever.
“But as long as I’ve got that Rovers jersey on I’ll be playing my heart out, wherever I have to play.
“I’m sure the rest of the boys will as well.
“My favourite position is full back.
“But I’ve still got a lot to learn. I need to learn how to be a playmaker at times too, it’s not just about running.
“That’s my go-to game, but I’ve got to learn how to bring my wingers and my centres into the game as well.
“Full back has changed through the years. You’re more of a pivot player there now.
“It’s more about slowing it up and seeing what’s on and giving that right ball to the winger or the centre.”