Craig Harrison felt his side were good going forward but were made to pay for not defending their box well enough during the 4-3 defeat at Eastleigh on Saturday.
Pools twice led through a first half double from Michael Woods but conceded a second leveller just before the break, which turned out to be a decisive moment in the game.
The Spitfires lived a little dangerously at the start of the second period as Pools pressed but Chris Zebroski hit the net twice to complete his hat-trick and that rendered Conor Newton’s late drive a mere consolation for Harrison and his players.
“I thought in the first half we were excellent – it was as well as we’ve played in a long time,” Harrison told Pools PlayerHD.
“There are key moments in the game and two minutes before the interval we concede from a corner – and whether you like it or not it probably chances the psyche of everyone.
“We’ve conceded from two crosses and two corners – the corner situation is disappointing because it’s a set position and you can get organised so that’s really, really frustrating.
“We didn’t stop the crosses at source and we didn’t defend our box well enough, and that’s not just the lads in those positions but all of the players.
“On the flip side I did think we were good going forward; we worked their keeper and we scored three good goals – we probably should have scored more too.
“But scoring three goals should be enough to win any game so we really need to start keeping clean sheets.”
Harrison revealed that Liam Donnelly was pulled out of the starting line-up after turning his ankle in the warm-up before the game.