The Wales coach is eager to release the pace of his back three - Shane Williams, Rhys Williams and Gareth Thomas - whenever possible, but has warned his forwards have to be more efficient up front than they were in the 23-10 victory against the Scots.
"We are going to impose our game-plan of going wide because it is what suits us best," said the New Zealander.
"To impose it you have to get your set-pieces right and last week we only got about 80% of what we are capable of doing.
"We have to be sharper this week because we are playing a better pack and have to attack their strengths and expose their weaknesses.
"We are playing against an Irish side who are far more experienced than the Scottish team and are used to being successful."