In an interview with The Salt Lake Tribune, Trost, who was named 2011 Coach of the Year by the Northwest Indiana Times as well as the Post-Tribune, said the move was a timely one. He graduated from Intermountain Christian High School, his wife Christy grew up in Park City, adding they missed the mountains as well as their families.
Trost said he's always had his eye on Juan Diego, a successful academic and athletic school, much like Bishop Noll.
"When the opportunity at Juan Diego came up, it was something I couldn't pass up," Trost said. "Juan Diego is such a great school. It has a great campus and great resources there. With our the families nearby, it was just too good to pass up."
Trost's time in northwest Indiana was tremendously successful.
In the last four years, Bishop Noll went 82-15 and was a rimmed-shot away from winning the state championship in 2011.
"We had a shot rim out three times," Trost said. "It still haunts me."
Trost said the program produced three Division-1 talents over the last few seasons, including former Bishop Noll star guard Adonis Filer, who is expected to be a starting guard for the Clemson Tigers in the ACC next season.
Trost recently coached the Soaring Eagle at the Big Mountain Jam basketball tournament. The team went undefeated and topped larger in-state schools such as Class 5A Fremont and Class 4A Westlake.
"I like to be a strong defensive team, trap them and really put pressure on the other team," he explained. "I wouldn't say I'm a defensive-minded coach, but I'm never a guy who's going to slow down the game. I like to get up and down and I think offense is important, too. The mentality at Juan Diego is the type that fits right in."
He called Juan Diego a "sleeping giant" in the high school boys' basketball realm.
But Trost knows there will be no more nights in which 16,000 fans crowd an arena like they did for the 2011 Indiana title game. He said he's excited to start a new chapter of his life in Draper, both as a head basketball coach as well as a math teacher.
Prior to his time with the Warriors, Trost, 32, was an assistant coach at Las Vegas High School for a year after graduating from Valparaiso University.
Trost's final season at Bishop Noll had a rough start as he stepped down from his position of director of admissions at the behest of the Indiana High School Athletic Association following an investigation of transfer of Lamous Brown, a Chicago student who had enrolled at Noll and who was eventually ruled ineligible.
"They looked into it and obviously didn't find anything," Trost said. "I could have gone back. I still had a job there. That wasn't the issue. It was just time to come home. We missed it here."
He replaces former Juan Diego coach Brandon Sluga.
• Chris Kamrani