Originally set to visit last weekend, Tuioti-Mariner instead tripped to Westwood this past weekend for his official visit.
And Tuioti-Mariner felt at home at his future school.
"It was the first time I'd been there since I committed and it really felt at home," said Tuioti-Mariner. "I live only like 20 minutes from there, but it really felt like home."
Tuioti-Mariner was hosted by Sam Tai, no relation, and spent time with several other players.
"I know (walk-on) Christian Wehrly because we played together (at Bosco) and my family knows Jordon James because my older brother played with him (at Corona)," said Tuioti-Mariner.
Tuioti-Mariner also spent plenty of time with defensive line coach Angus McClure.
"I got to spend a lot of time with Coach Angus and got to know him more," said Tuioti-Mariner. "He is a good guy."
Tuioti-Mariner said the highlight was just being at the school with the coaches.
"I really like the actual campus and how the coaches act," said Tuioti-Mariner. "They really take care of their player. It's cool too to see the lifestyle of UCLA."
The lone commit officially visiting, Tuioti-Mariner did some recruiting of his own.
"I was trying to get everybody to UCLA," said Tuioti-Mariner. "They all looked like they enjoyed themselves there. I hope they make their decision to come to the West Coast."
Tuioti-Mariner said the coaches plan for him to come in as a defensive end and if he gets bigger, they'll determine later if he'll move around.
In the meantime, he and fellow UCLA commit and Bosco teammate, Jaleel Wadood, are doing some recruiting at school.
"Jaleel and I are both trying to get Josh Rosen to UCLA," said Tuioti-Mariner. "We're both working on him and we look forward to having a lot of players from Bosco at UCLA."
From a 2-star that was under the radar in the spring, to a four-star state champion playing for the hometown school, Tuioti-Mariner said the last year has been quite the ride.
"It's an actual blessing to have all this," said Tuioti-Mariner. "I'm really honored to get the notice and I'm just going to still try to work and get better."