Hastings Boys' High School product Harris, 21, also has his attention on a major off-field date next month. He will marry his partner Natalie Jones, of Wellington, in Melbourne.
While he will always be remembered as the bloke dropped from the Kiwis' 2013 World Cup squad after Sonny Bill Williams' controversial change of mind to make himself available, Harris is working hard to be remembered for his on-field exploits next year.
This year was certainly a memorable one for Ngati Kahungunu's 2010 Junior Sportsman of the Year. He scored a crucial try in the Storm's World Club Challenge win over the Leeds Rhinos in Britain and after an impressive NRL debut season for the Storm made his Kiwis' debut in the April Anzac test.
"It's been a long season and I definitely got more game time than I expected," Harris said.
As he farewelled Hawke's Bay, Taranaki and Manawatu youngsters after the weekend's clinic, his memories of the 2008-09 Storm trial camp he attended in Wellington flooded back.
"This weekend's clinic was pretty much the same as that one. I was particularly impressed with the talent in the under-15 age group here this weekend ... there is a lot of potential. I told them no matter what happens it's important they soak everything up at clinics like this," former Tamatea premier league and union player Harris said.
"Even if they don't get selected straight away to trial for an NRL club they should always do everything they can to continue to improve their game. There will always be opportunities down the track and if they continue to improve their game and themselves they will get their chance.
"I don't know what these youngsters are like off the field but they know it's important to be balanced," Harris, who his former Tamatea coach Adrian Rowlands described as "one of those one-in-a-million blokes" back in 2009, said.
"Tohu doesn't drink, doesn't smoke and doesn't have a girlfriend ... that's how committed he is to his sport," Rowlands said.
There's no doubt Harris is an ideal role model for youngsters eyeing a crack at the big time.
New Zealand Rugby League's development officer for Hawke's Bay, Anaru Bartlett, a cousin of Harris, described the weekend, which attracted 70 lower North Island players, as "massive".
"All the indications are that it will become an annual event," Bartlett said.
Six of the players will be monitored with the aim of being considered for a youth trial with the Storm club, similar to the one Harris had as a youngster.
They are the Bay's Xavier Smith, Bailyn Sullivan, Al Momoisea and Vita Tomoana and Taranaki's Tre Te Wake and Joey Los'e.
Smith was the outstanding under-17 player of the weekend and Te Wake the pick of the under-15 players.