YT,
I grew up fishing for the billfish tournaments on my cousins boat off New Jersey shores (Ocean City, NJ). We caught mostly yelllow fins tuna and some sail fishs at least 30 miles off shore.
The tuna steak on the grill are so tasty. You will want to keep the tuna meat in addition to fighting them.
Blue fins tuna are much bigger and I do recall catching a few of them.
AD