The 29-year-old eloquently defines the role of people who forever face the daunting task of correcting players without causing resentment.
"I think it's important that in a coach you have natural ability so you can do demo sessions," says Carrino, who played as a youngster up to university level as a right winger and is partial towards a 4-3-3 formation.
At 18 it dawned on him that he was not going to make it through an academy so coaching beckoned to keep the passion alive on the foundation of a football-related degree.
His philosophy, akin to 24-year-old McIlroy, evolves around the Celtic one of capturing the imagination and subtleties in the movement of the ball.
"We look to play at a high tempo and a short-sharp-passing football while progressing from defence and getting forward in numbers."
Carrino says it is equally imperative that when devoid of possession players become diligent foragers.
"So our philosophy is pretty much about keeping the energy levels up and keeping the ball down to play football."
It is a far cry from their younger days when coaching was "more about running a team".
"It wasn't so much about coaching but more about being direct, which is the British style of football."
Carrino says the short-sharp Spanish and German influence is now obvious in Britain.
The sessions with Marist youngsters have impressed the pair.
"We've been getting across our philosophy of a hard-working mentality so the guys have responded really well," says a grinning Carrino, adding that included a prem men session where he scored a couple of goals.
A potential to bring a squad over from Glasgow exists so interested parties can sample what the Celtic academy conducts.
"There's certainly the opportunity for a squad from Marist to go there and experience things as well."
He is happy with Celtic. The lure of going to other glamour league clubs in Europe is not a distraction.
"I grew up at Celtic and supported the club all my life," he says.
Meeting new players, coaches and fans in a new part of the world, Napier, is something he will treasure.
McIlroy, a semi-professional on and off, has been at the helm for five years, as well as taking in India, Kuwait and Ireland.
"If things don't work out for you at 16 or 17 then you kind of go for a coaching badge," says the man who played striker as youngster but found himself gravitating towards the defenders as he got older and other young guns started nipping at his heels.
If anything, he sees having played across and deep on the park an advantage of first-hand experience when mentoring.
McIlroy hopes to develop and inject his philosophy at some stage of his career but he reckons time is on his side.
"It's a pretty lucky job," he says, relishing visiting countries.
A decade on, he feels his future lays in the hands of the club and what direction it takes.
The coaching stable evolves and mutates so overseas stints reinforce the trips McIlroy and Carrino make to borrow trends to ensure Celtic's vision remains contemporary.
Conversely they have brought their brand to expose to youngsters at Marist.
"It's a Marist and Celtic camp but it's kind of going a little the Celtic way," McIlroy says, enjoying his time here and believing there's scope to encoarch Wellington on the way to the rest of the country.
"Hopefully it's been a good advertisement because the guys from Marist have done a great job so hats off to them."
The pair would love to return to the Bay in summer although they hastened to add their past week yielded a few winter days that resembled summer days in Scotland.
