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Jamie Coyle felt Darford played their best football of the season in Tuesday's defeat to Torquay.
Darts did everything but score in the first half, opening the Gulls up and creating some great chances.
But it turned into a frustrating night for Coyle and joint-manager Adam Flanagan as Dartford conceded twice in the last 20 minutes.
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Report: Dartford 0 Torquay United 2
Coyle said: "It’s a mix of emotions because the first half was the best we’ve played all season.
"I don’t think anyone could grumble if we went in three or four up.
"They cleared two or three off the line, we’ve hit the outside of the post and we had 14 attempts on target in the first half.
"To do that against a side of their quality, a full-time team, there’s loads of positives to take out of that but unfortunately it summarises our season.
"We haven’t got enough punch in front of goal and that shows in the goals we’ve scored this season. It’s something we need to address."
Dartford remain sixth in National League South while Torquay are now six points above them and top of the table.
"Earlier in the season we weren’t creating those opportunities," Coyle said. "We played some good football, in the first half especially, but we know we need more goals.
"We were 17th in the league for goals scored on Saturday and it is a focal point we’ve really been trying to address in recent weeks.
"We still need to look at that area because although the boys who played today have given a real good shift and created some brilliant chances, we need to be more ruthless in front of goal."