Manager Paul Sturrock highlighted a first half tactical change as the reason for his sides 3-1 win at Cheltenham Town on Saturday.
Blues battled back from a goal down to secure their fourth win in a row.
But it looked a different story after Robins winger Jermaine McGlashan gave Cheltenham the lead after just 15 minutes.
“We rode our luck a bit in the first half an hour and the goalkeeper had to make two or three saves,” Sturrock told the official website.
“Once we got the equaliser we got ourselves in the right areas of the pitch in the second half.
“Footballers in this day and age have to be moved around like Subbuteo men.
“Once we sorted out the midfield and changed the system a bit then it seemed to work well for us.
“I rattled the cage a wee bit at half-time as I didn’t feel the tempo was right and I felt we had a couple more gears in us and it proved the case. I’m very happy.”
Defender Sean Clohessy pulled Southend level just before the break with a well take strike.
It was the full-backs first goal since New Years Day 2011 and Sturrock was full of praise for United’s dependable right-back along with Blues front pairing.
“We hit the bar then it is saved off the line and it comes back to our right back and we score,” he said.
“I am pleased for him because we deserved it as during that spell we were just starting to get in the right areas.
“The front two have been a revelation for us.
“Britt has five goals now because he seems to be in the right place at the right time.
“He’s not just a goalscorer as he is an all round player and he will only get better.”