A burly back, Vainuku can also play offense, and some schools can't decide which side of the ball he'll be on.
"The coaches are fighting with me over what position to play," said Vainuku. "Washington and Oregon State want me on both sides. Hawaii wants me to run the ball and San Diego State wants me to run the ball. UCLA likes me as a linebacker and USC, they want to me play kind of the Stanley Havili role. At the camps, I'll go one day at linebacker and one day at running back."
Vainuku will be busy for the next week, with plans to visit Oregon unofficially this weekend, then camps at UCLA and USC next week.
"I'm going to Oregon this weekend, UCLA on Monday and Tuesday for their camp and then Wednesday and Thursday I'm going to USC for their Rising Stars Camp. And I'm hoping to get up to Washington too this summer," said Vainuku.
Vainuku said his top schools list is pretty big, but that a few schools are in front, thanks to the offers.
"My top five in order are Washington, Oregon State, San Diego State and then Arzona State and Hawaii," said Vainuku. "Then Oregon, USC and UCLA are all in there, and I'm hoping to get an offer from all them."
Vainuku said he's not in a rush to decide, and wants to see what his options look like before he makes a decision.
"Me and my family have been talking about it and we're going to look at what we have to look at before making my decision," said Vainuku. "My parents want me to take my trips before I make my decision. So we're going to wait."
Vainuku, who is LDS, said serving his mission is still up in the air, but as of now, he's leaning towards putting it off for later.
"If I had to choose today, I'm probably not going to go on my mission," said Vainuku. "I'm ready for the next level for football and I can wait until later in my life to do that."
Vainuku said he's anxious to get back to the camp circuit, having to spend most of the spring away from camps. He did participate in the Badger/Scout 7on7 Passing Tournament in Las Vegas.
As a running back in 2007 Vainuku rushed for 1,500 yards and 27 touchdowns and as a junior in 2008 he had over 800 yards and 14 touchdowns on the ground and posted 34 tackles, one forced fumble and one interception from his linebacker position.