Crawley Town's head coach Dermot Drummy is not revealing if he will continue with the four-man defence he used in their 0-0 draw with Blackpool when they travel to Luton Town on Saturday.
But he was pleased with the side's defending following two 2-1 defeats in the previous games against Stevenage and Notts County.
Drummy believes they showed an improvement which he would like to take to the Hatters.
He said: "A point makes a difference and the performance was pleasing as well.
"It was fortuitous maybe in they (Blackpool) missed the penalty and luck was with us.
"But I was pleased with the shape of the team and the defensive element, having given away late goals in previous games which was a massive disappointment.
"So an improvement all-round in the mental side of the game."
Drummy changing from a 3-5-2 to 4-3-3 system following some costly slip-ups in their last two games and he was pleased with the results.
He said: "We switched the formation and changed to a back-four because of the suspension of Josh Yorwerth and I thought this gave us some more balance.
"I'm happy playing a four. It gives us overloads. We are learning a three. We are more comfortable with a four because we haven't played with a three too many times with a three.
"With Luton coming up, I will look at each side we go against and see if three is better or if we need the four, so I will keep my cards close to my chest.
"In previous times a lot of the goals was down to elementary errors. Orient was a very disappointing performance, some of the marking has been slack.
"Against Stevenage we let in a goal with proably ten players in our box defending.
"Sometimes for me the strategy to attack is more important than the shape we play.
"The wing-backs have got to be physically superior, fit people than the defence. Some players are better off playing further up the pitch. It's horses for courses at times."