The hosts were unable to break down a stubborn Tigers defence at Anfield, and while Skrtel was pleased with a first clean sheet since August, he conceded that the draw was an unsatisfactory result.
He told the club's official website: "After the Real Madrid game, we wanted to win and get the three points. But, unfortunately, we couldn't score a goal and it was just a draw. It's not enough and we're not happy with that.
"We knew it was going to be a tough game because Hull City play well; they got a point at Arsenal so we knew they were going to defend well. They showed that again. We tried to play our game, move the ball and create chances - but we couldn't take them.
"It's nice because there has been a lot of criticism about our defending, so I'm glad we got a clean sheet. The clean sheet is a small plus for us."
Liverpool host Brendan Rodgers's former club Swansea City in the League Cup fourth round on Tuesday.