The Western Bulldogs have been urged to bolster their key position stocks next season.

The Bulldogs struggled to contain St Kilda's tall brigade in their three-point elimination final loss.

Speaking on Fox Footy’s The First Crack, North Melbourne premiership player David King said the Bulldogs need to address their defensive stocks.

“They really need someone they can put a magnet next to and say ‘that’ll get done’,” King said.

“I know they play an assertive defence and it’s slightly different, but too often we saw Caleb Daniel dragged to full back and St Kilda getting what they wanted.”

Former St Kilda midfielder Leigh Montana thinks the Bulldogs need to add experience to their ruck stocks and let Tim English spend more time as a forward.

“I think they’ve got to go and get another ruckman, I think Tim English should play more forward,” Montagna said.

“He was their most potent forward today, I like him down there.

"I think they need to go and get a big-bodied ruck and play the two rucks."