"Whilst we haven't been doing too bad, it's been a long time since we won a game," Allardyce said.
"The only way for us to get back to winning ways is to go to Blackpool and not concede a goal.
"We will then have the opportunity to win the game. Whether we take it or not is a different matter.
"Only one clean sheet in seven outings is something which has stopped us winning matches.
"The more it goes on, the more it saps confidence."