Laidlaw secured Scotland's first win over the Wallabies on their own turf in 30 years when he slotted home his kick, after the final hooter had sounded, in atrocious conditions.
"He has done that all season for us, pressure games, pressure kicks - he nudges them over. I have total confidence in him," said Ford.
The winning kick prompted celebrations from the Scotland players, who had also won their previous meeting with Australia 9-8 three years ago.
For coach Andy Robinson and his players there was clearly a mixture of relief and delight after they showed great discipline in the second half, holding off the Wallabies after they dominated with a stiff breeze at their backs.
"Our tackles and breakdown work was good and we held them out," Ford said.
"We had to stay disciplined and not give away penalties needlessly. We had to trust in the defence and keep it going.
"It showed in the end that we did manage to break out of our half and into a position where we could attack."
For Robinson and his team, it was the first win of the year and broke a sequence that had run to seven consecutive losses.
Robinson insisted, however, his side would not get carried away by the result, and that there was still a lot of work to do if they were to start fulfilling their potential consistently.
"I am just delighted for the players and the management who have worked so hard," he said.
"Also the Scottish supporters because it has been tough for them when the games have been so close and the team has been playing well, getting into good positions to win matches but not achieving that.
"I understand the disappointment, but for this group of players and management, there is a real belief and you saw the team spirit.
"Today our plans in tough conditions worked well but we are going to have to keep improving and keep working hard. I know from the Scottish boys that they are going to do that and that is why they are a delight to coach."
He heaped praise on the work done in defence - he singled out the back row of Alasdair Strokosch, John Barclay and Ross Rennie for special mention - particularly in the second half, when Australia were camped within 10 yards of the Scots line for almost 35 minutes without ever looking as though they would score.
"It is very important for the side to show the courage that we showed in defence, particularly when we turned round at half-time and it was only six-three," he added.
"It was going to have to be an amazing effort to win the game with the pressure that Australia put us under on our line.
"We couldn't get out of our half and it needed to show a huge team spirit from everybody. I thought that was shown in abundance.
"This team has worked really hard. In the Six Nations it was unlucky in a couple of games and today it has gone the other way for us.
"We have got that bit of luck through the hard work that they put in and got a fantastic victory. Back-to-back victories against Australia, for a Scottish team is immense."
Australia coach Robbie Deans admitted that Scotland's defence had been the difference, though he felt his side did not test the away side's rearguard as well as they should have.
"We had enough possession to put the game out of reach but credit to Scotland, they got one opportunity in the second half and took it," Deans said.
"We started the second half pretty well and thought that we had a momentum but then, as tends to happen in conditions like that, when you don't turn the scoreboard over, it gets messier and the opposition grows a leg if you give them that encouragement.
"Anxiety then kicks in and the conditions contributed to that. We lacked the co-ordination to work our way out of it."
Deans was backed by scrum-half Will Genia who felt missed scoring chances in the second half cost them.
Michael Harris failed to make the distance with a pair of long-range penalties, while Berrick Barnes sliced a late drop goals wide.
"We had plenty of possession in the second half and plenty of momentum, it was just one of those games where we had to get the scoreboard ticking over and we didn't," said Genia.
"Whether it was through missed penalty goals or drop goals or just holding onto the ball for that little bit longer so that we could turn it into a five pointer."
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