"It's been getting pretty hectic over the last couple of weeks," Grimble said. "Offers have been coming in like crazy.
"I am just taking it all in and enjoying the moment, but at the same time trying to narrow it down and see where I really want to go."
With offers from several schools across the country including USC, UCLA, Oklahoma, Florida, LSU, Florida State and Texas A&M, Grimble spent this past weekend in Los Angeles getting a closer look at the USC Trojans.
The four-star tight end, whose brother lives in nearby Manhattan Beach, was on hand for the Trojans' first practice of the spring and came away very impressed by the intensity and passion they showed on the field.
"I loved it. I liked every bit of it," Grimble said. "They are hard on their players and they might yell at them but they do it in a fun, high intensity way. They are excited about football and want to win.
"I just like that whole atmosphere a lot. I have never experienced such a high intensity team."
While on campus, Grimble got the opportunity to visit with the coaching staff and strengthen his relationship with tight ends coach Brennan Carroll.
"It's really starting to develop now were I am calling (Carroll) like once or twice a week and we are really bonding," he said. "I am trying to build a relationship because after that practice, USC is pretty high on my list now."
Like most recruits that the Trojans pursue, Grimble loves to compete and wants to test himself against the best.
"Competition is a part of the next level," he said. "Any school that you go to you are going to be competing for a spot. It's competition, that's what football is all about."
Grimble proved to be a step ahead of the competition in 2010 class, when he was ranked the No.1 tight end in the country by Scout.com, an honor that came as a surprise to the talented prospect.
"To be honest, I was just hoping to get in the rankings, being No.1 hadn't really crossed my mind," he said. "When I made No.1 it was a surprise and I was really excited.
"It's time to prove myself even more and go that much harder."
Last season, Grimble pulled in 12 catches for 295 yards and 3 touchdowns in Bishop Gorman's run-oriented offense.
"I think the best part of my game is that I can do it all. I can block as well as catch, run and make plays," he said. "This year we had a new coach and he had a run base offense, so I told myself that I was going to focus on learning how to block really well."
The 6-foot-5, 245 tight end won't be able to attend USC's Rising Stars Camp because of a basketball tournament, but plans to get another look at the Trojans before the end of spring practice.
"I will probably make it out to another spring practice or the spring game," Grimble said.
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