The one blacktip I ever brought home was about 3 feet long. I cut it into 10 steaks and 2 tail filets. Marinated half in salt/brown sugar brine, half in olive oil, lemon, and black pepper. Not very long, about 2 hours in the marinades.
All of it went on the charcoal grill. The brined steaks got Sweet Baby Ray's, the oil and lemon got more lemon , to finish.