Ulster, currently fourth in the GUINNESS PRO12 table, lost their opening two European fixtures against Leicester Tigers and Toulon, with just one bonus point to show for their efforts.
But the 24-9 win over Scarlets has given their campaign a shot in the arm, after first-half tries from Darren Cave and Ruan Pienaar were supplemented by Tommy Bowe and Rory best efforts in the second period.
And Doak says his squad deserve credit for bouncing back to winning ways.
"We knew what we needed to get done and I am very happy with that," said Doak.
"Credit to the guys, they stuck at it. When we played territory we put them under pressure and got the scores on the board.
"We got the bonus point and it keeps us in the mix and if we can pick something up (over there) it means the last two games could be in better reach than the first two were."
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