Especially college coaches.
Having played in Emmett, Idaho as a sophomore, Gustin moved to Salem Hills for his junior year and flew under the radar.
Then his film got out just a few weeks ago.
Utah State, always good at finding in-state sleepers, offered first.
"Utah State was my first offer and they offered four weeks ago," said Gustin.
Since then, things exploded for Gustin.
"The rest of them have really come in the last couple of weeks when my film got out," said Gustin.
Now, Gustin is closing in on 20 offers.
"I'm at 19 offers right now," said Gustin. "I have offers from Louisville, Wyoming, Washington, Washington State, Utah, Utah State, Vanderbilt, Illinois, North Carolina, Wisconsin, UNLV, Hawaii, California and Purdue."
A number of other schools have been showing interest too.
Gustin plays a number of positions and his recruitment is seeing each of those positions being tabbed.
"Most of the offers are for outside linebacker or stand up defensive end," said Gustin. "There are a few in there for middle linebacker. A couple of Pac-12 schools like me as a tight end. Some like me as a quarterback even."
But Gustin has no preference.
"I'd like to play any position that would help my team win and hopefully win a national championship," said Gustin.
This weekend, Gustin will be in the Bay Area, visiting Stanford for their Junior Day and then heading over to visit Cal unofficially.
"I've visited Utah, Utah State and Boise State and I'm on my way to Stanford and Cal," said Gustin.
Utah had him on campus on Wednesday and they offered him then.
Gustin credits his coaches and new school for making him known.
"There has been a lot more exposure for me at my school now and my coaches are helping me out a lot more and helping me get my film out," said Gustin.
Gustin is LDS and plans to serve his mission immediately.
"My plan is to serve my mission right after high school," said Gustin.
Gustin said he didn't have a favorite school growing up and doesn't have a favorite now.
"I don't really have a favorite," said Gustin. "I'm just keeping everything open right now and I want to see where a schools fits best for me."
Academically, Gustin has a 3.7 and scored a 20 on the ACT with plans to take it again.
His only camp plans coming up are the All-Poly Camp in Utah.