Broncos star Anthony Milford.

Brisbane coach Anthony Seibold insists he will stick with Anthony Milford at fullback for the short term after seeing enough benefits for the side following their 26-12 loss to the Knights.

Milford's move to fullback was mooted earlier in the week and the Samoan international was one of the more dangerous players for the visitors particularly in the second half, while Darius Boyd endured another difficult night with a couple of costly errors after being switched to the halves.

The experiment was short-lived in other ways for Seibold with winger Richard Kennar suffering a dislocated shoulder early, forcing a reshuffle in the backline that included Boyd defending in the centres.

Seibold was subdued when talking about the switch on Friday but offered more reasoning following the 14-point loss.

"I just think that for our team at the moment Milf is better suited to play fullback," Seibold said.

"With Darius his weapons are out the back with shape and on short sides. I also think that him defending in the front line is a good thing.

"It was a little bit funny tonight because he had to defend in the centres and play as a half. It's brand new and I think it's best for us with Tom Dearden out as well. We don't have a whole heap of options and some of that is our own doing but we'll persist with that.

"I thought Milf looked pretty good and he'll only get better, as will Darius as a half."

Brisbane's loss was their ninth of the season in a year that has been full of drama, with the latest being the departure of Jaydn Su'A to the Rabbitohs during the week.

Seibold conceded he was part to blame for the club's struggles on the paddock and took overall responsibility for where the club is placed.

"When you lose games you underachieve," Seibold said.

"The reality is we had eight guys out there with less than 25 games [in their career]. They're learning and I'm the head coach and take responsibility for us.

"They'll continue to learn the longer I'm there. It's a tough challenge at the minute.

"I just think at the moment we can't handle any sort of chaos or decision or error that occurs. There's a lot of effort but we're not resilient enough individually or collectively at the moment.

"I'll take the blame for that. Who learns quickest in the NRL usually succeeds and we've got to find a way to learn."

Seibold indicated Kennar's season appeared to be over with the Broncos winger requiring scans to determine the severity of a serious shoulder injury.