Goals from Jack Baldwin, Luke James and the impressive Jack Compton did the damage for Hartlepool, who made it a hat-trick of away wins in a week after successes at Mansfield and Sheffield United.
"That was an outstanding away performance. They started better and we started on the back foot," Cooper said. "But Jack's goal sets us up and from then on in we have done terrifically well.
"We got our noses in front and that knocked the stuffing out of them and we have gobbled up everything they have thrown at us.
"It rounds off what has been a really good week for us. All credit to the lads, all the staff - everyone is working really hard and at the minute there is a nice feel.
"We have had two good away performances this week and we didn't want to be over-confident and complacent.
"Every single person who makes the journey we have to thank. They have seen us sparkle away from home and now we need to give the home fans the same sort of thing. Let's hope we can turn that home form around.
"Other than the first 10 minutes I thought we looked comfortable and thoroughly deserved the win. Headers, tackles, blocks - we had them all."