I do not think Hayes and the rest of the Ireland pack will have a whole lot of trouble against England at Twickenham on Saturday. Ireland did very well in the scrum against Italy, poorly against France, but then France were truly extraordinary.
Ireland were totally outplayed in Paris and I think they will be a tiny bit jaded, but that does not mean the buzz has gone. The big issue is confidence - has it taken a knock?
Even though they were being outplayed, there was a five-minute spell in the first half where, if things had gone Ireland's way, they could have still been in the game.
If Gordon D'Arcy had been able to collect that ball that bounced the wrong way off the post, that would have made a big difference, because if you are in the game after 20 minutes in Paris, you are in with a chance of winning. And if you score at that stage, you might have seen the energy seep out of the French.
Sexton's a bigger physical presence than O'Gara, a better defender and he has what you might call youthful ignorance
Instead, Cian Healy gave away a penalty at the other end and got a yellow card, Jerry Flannery performed his magician's trick and tried to cut someone in half and Ireland fell into a huge hole.
Wales coach Warren Gatland said he didn't think France were that good and inisted Ireland were very bad, but that is not entirely true.
Ireland did not play at their best, but France, when they are playing with that kind of confidence, are peerless. England simply aren't as good as France so a lot of the problems that existed in Paris will not exist at Twickenham.
Ireland will have learned an awful lot about contact in Paris, because France were fantastic at the contact area. Ireland need to win the collisions in the forwards against England and need to be running on to the ball.
That was the difference between the France game and any other game Ireland have played recently, and as a result Ireland's ball was poor. Against England, if Ireland get any ball of note, I think they can do damage.
Leinster's Johnny Sexton may not have Ronan O'Gara's experience at fly-half, but I think it is time for him to play. Sexton is a bigger physical presence, a better defender and he has what you might call youthful ignorance.
O'Gara plays the percentages very well, and although I would not say he is predictable, teams are forcing him to play in a certain style. He takes the kicking option a lot of the time, while opponents rush up outside him so he has to go himself, and he has not really got the turn of pace to make a half-gap into a whole gap.
Offensively against France, Ireland did not look high on confidence, and that is where Sexton comes in, because he is also quicker than O'Gara and he will mix the game up a bit more, mainly because he does not know any better.
I do not think Rob Kearney's absence will make a huge difference to the team. England will not profit from kicking the ball to Geordan Murphy because, as a former Gaelic footballer like Kearney, he can field the high ball in his sleep.
Which begs the question, will we see a more adventurous England from the team that played Italy? Well, I'm sure there are those that would say if they string two passes together, that would be a more adventurous England.
England are in a very funny situation, at a crossroads. They could go back down the pan very quickly or they could actually start achieving and setting higher standards for themselves. But they need a cutting edge.
Ireland's discipline, with the exception of Healy and Flannery against France, has been fantastic (Healy's yellow card was Ireland's first in 12 months) so England cannot rely on kicking goals, they need to score tries.
England at home are very, very difficult. But the truth is the idea of fortress Twickenham does not really exist any more and I think Ireland will win. There is too much in the team and they do not want that negative feeling again.