Lions boss looks to takes positives from Tuesday night's draw
"We put 20 crosses into the box, which is the second highest after Bristol Rovers, in our last home game," said Chopper.
Millwall boss Neil Harris was left wondering what might have been after watching The Lions dominate the stats in Tuesday's 0-0 draw with AFC Wimbledon, yet still come away from the game with just one point.
"My gripe at Bolton at the weekend, in a game with very few chances, was that we gifted them two goals, and if anything we should have kept a clean sheet.
"I was delighted with the clean sheet against Wimbledon, but it's a game that, on reflection, we should have won. I thought we got into really good areas but I thought we also lacked a little bit of quality at times.
"We had 13 efforts on goal, eight on target. We should have been more dangerous than we were. Fred (Onyedinma) probably had the best chance with the knockdown towards the end.
"We could have gambled a little bit more and got more bodies into the box, considering we put so many crosses in. What we didn't do was use the ball as well as we did against Bristol Rovers.
"Having said that little moan about the players, I thought they really stood up strong against a battling, aggressive Wimbledon side. I'm delighted with the clean sheet."
For former Lions skipper Paul Robinson, the game marked his first return to The Den as a player and he received a wonderfully warm ovation from the Millwall fans.
"He was brilliant, wasn't he?" added Chopper "He made a block on the goal-line and headed one from underneath the bar. That's just him. That's just his quality. Tweets by @MillwallFC
He will be delighted with a clean sheet and a point back at The Den."