Tigers boss Bruce called it "an absolute quagmire" following the game and Appleton was in agreement, after seeing his side fail to win for the fourth consecutive game.
"The state of the pitch makes it difficult for us to move the ball and do so quickly," said Appleton.
"It slows the game down but my biggest concern is that someone will get injured because of it.
"Players are constantly losing their feet but it was a game where you could see from the start that there wouldn't be many chances.
"You have to see any point against Hull as a good result. We put in a solid performance and we had the better possession.
"We looked comfortable and getting a clean sheet is a big positive."
The result leaves the Tangerines six points off the play-off places and nine points above the drop-zone. Appleton is hoping to use the transfer window to help move the club back up towards the promotion battle, but he will face a battle to keep some of his star players.
He added: "Hopefully we will have three or four new faces in during the next couple of weeks to freshen things up.
"I've heard nothing more about Alex Baptiste or Thomas Ince after the initial bids were made a few weeks ago. As far as I'm aware they will both be in contention for the FA Cup tie with Fulham at the weekend."