"If you are used to doing things a certain way all through your career and that way has made you become the goalkeeper of Manchester United and I bring you out of that then you are going to wonder what I am doing and why I am doing that," he says.
"But I am not afraid to do things that I am convinced make goalkeepers better. I do not look at the goalkeeper in isolation, I look at the total picture. You cannot look at it in any other way. It is all about the relationship of the goalkeeper with the team.
"For me it is no more than logical. The game changes so I need to change. The demands of the game change what we want from a goalkeeper. So how are we going to integrate that?
"When I look back over the years, I can say that during my 12 years at Ajax it was maybe 50-50 between isolated and integrated training. I still believed then that isolated training was important. I kept it like that for a while until it became maybe 70-30 in favour of integrated.
"At Manchester United, it was maybe 80 to 90 per cent with the team and only 10 to 20 per cent without the rest of the team. I can tell you that the goalkeepers did not like that.
"It was completely different to what they were used to. I was very stubborn because for me there was only one thing that counted – progression in the game. The problem was that the isolated practice was not always improving them. In fact, it was even making them worse."
How could that be the case? Surely facing shots is the best way of learning how to save shots in a game situation? Once again, Hoek has an answer. It is lengthy and persuasive.
"Think about isolated goalkeeper practice. It is just one person taking a shot. How often does that happen in a game? When the assistant coach was taking shots at me, after one practice I knew everything about his kick. There were no surprises. Nothing.
"Not only that, if I am talking about a game, I am talking about my team-mates, defending and attacking together as a team. So you have to work together and read the situations.
"I started that young with Victor Valdes and Pepe Reina at Barcelona because I knew that if they had trained together as part of the team then the only thing that mattered after that would be whether they could deal with the pressure of 100,000 people watching them.
"The phrase you always hear with goalkeepers is that the older they are the better they get. Why? It is because they are always practising in isolation and becoming better by playing games. So when a goalkeeper is 30 they have been playing 10 years and had 400 games.
"If you bring the game moments to the practice then he is going to recognise these game moments much earlier in his career so he will need less time to reach his peak.
"Edwin van der Sar was the number one at 22. Valdes at 20. Reina at 20. It is not exceptional as long as you have the right methodology to make them aware of the game situation.
"I don’t care about resistance. It is not about me. I do this because I want people to wake up and to confront them with different things. Make them think. My job is to provide the goalkeepers with the best coaching. That means being open. If you don’t agree, show me how you would do it. If someone thinks differently, perfect. But explain why."
I'm a massive DDG fanboi, was speaking out loud sarcastically rather than saying it on here.