The Falcons headed into the match $1.50 favourites, with Souths Logan a $2.50 outsider after winning only one match before last night's round 10 fixture.
The Coast was expected to hit back strongly following last week's 50-16 loss to Mackay and started the match in good fashion, but again failed to put together a complete performance.
Hansen said his side's inability to turn half-chances into points was a big factor in the Falcons' scoring capability.
"I thought we had plenty of opportunities and we spoke at half-time about taking them, but we just didn't take them," he said.
"We had chances to go over the line and at this level when you get an opportunity you have got to take it, otherwise you will get burned."
The Falcons had a howling wind at their backs in the first half but consistently surrendered possession on the opposition's 30-metre line.
Falcons No.6 Ben Hampton managed one of the plays of the game when he kicked a 40-20 from his own 20m line, finding touch on Souths' 10m line.
But Souths easily held out the Coast side and lead 12-0 at the break.
"At half-time we spoke about not giving them seven-tackle restarts, but we continued to give them a ton," Hansen said. 'We let in a few soft tries and before you know it, it's 30-4."
The Coast's poor goal-line defence would have coach Glen Dreger worried, with some of the Falcons' outside backs resembling turnstiles.
AND with his side leaking a total of 85 points in their past two games, the mentor will likely be starting to feel some heat.
The Melbourne Storm-contracted Hampton was unusually quiet yesterday and the star half failed to hide his obvious frustrations at a lack of cohesion in attack.
"I know people like to talk about him a bit, but he struggled just like anyone else out there today," Hansen said.
"We will go back to training and analyse the video.
"There are a lot of positives there and our defence was a big step up on last week."
SOUTHS LOGAN 35
(S Vaioleti 2, M Trnka 2, J Damen, J Boyce tries; S Doyle 5 conv; A Taylor field goal)
SUNSHINE COAST 4
(T Tumusa; try)
Courtesy of Sunshine Coast Daily