Dougall scored either side of half-time at Wembley in Sunday's League One playoff final to seal a 2-1 win for Blackpoool over Lincoln.
Ollie Turton's own goal put Lincoln ahead after just 48 seconds -- the quickest goal in third-tier playoff finals history -- before Dougall equalised 11 minutes before the break.
The Australian made it two and put Blackpool ahead with a low drive from 20 yards eight minutes into the second-half.
"Left foot, right foot," Dougall posted on his Instagram account along with an explosion emoji. "Unbelievable from the lads."
Brisbane-born Dougall had only scored two goals this season prior to the playoffs, both against Oxford United.
He found the net again against Oxford in the playoff semifinals before Sunday's Wembley double took his tally to five for the campaign.
Dougall's form will have him pushing for a first cap when he links up with Graham Arnold's 31-man squad for World Cup qualifiers in Kuwait City against Kuwait, Taiwan, Nepal and Jordan over the next fortnight.